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	<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?action=history&amp;feed=atom&amp;title=Y_Sefydliad_Chwarelydda</id>
	<title>Y Sefydliad Chwarelydda - Hanes golygu</title>
	<link rel="self" type="application/atom+xml" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?action=history&amp;feed=atom&amp;title=Y_Sefydliad_Chwarelydda"/>
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	<updated>2026-05-06T17:21:19Z</updated>
	<subtitle>Hanes diwygio&#039;r dudalen hon ar y wici</subtitle>
	<generator>MediaWiki 1.43.1</generator>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=13046&amp;oldid=prev</id>
		<title>Cyfaill Eben am 15:33, 28 Chwefror 2022</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=13046&amp;oldid=prev"/>
		<updated>2022-02-28T15:33:08Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 16:33, 28 Chwefror 2022&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;&#039;Y Sefydliad Chwarelydda&#039;&#039;&#039; â&#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&#039;n sefydliad ar draws Prydain Fawr, gan &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;mae &lt;/del&gt;rheolwr chwareli ithfaen yn [[Uwchgwyrfai]], [[Simon McPherson]], a&#039;i sefydlodd ym 1917.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;&#039;Y Sefydliad Chwarelydda&#039;&#039;&#039; â&#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&#039;n sefydliad ar draws Prydain Fawr, gan &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;mai &lt;/ins&gt;rheolwr chwareli ithfaen yn [[Uwchgwyrfai]], [[Simon McPherson]], a&#039;i sefydlodd ym 1917.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Yn &lt;/del&gt;1917 fe alwodd McPherson gyfarfod yng ngwesty Tywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;benodwyd &lt;/del&gt;yn &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Ysgrifenydd &lt;/del&gt;Cyffredinol. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Dyma &lt;/del&gt;yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;Y Diwydiant Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), Canolfan Genedlaethol Cerrig , (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;sylfaenwr&lt;/del&gt;.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Ym &lt;/ins&gt;1917 fe alwodd McPherson gyfarfod yng ngwesty Tywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;penodwyd &lt;/ins&gt;yn &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Ysgrifennydd &lt;/ins&gt;Cyffredinol &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;arno&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Hwn &lt;/ins&gt;yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;Y Diwydiant Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), Canolfan Genedlaethol Cerrig , (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;sylfaenydd&lt;/ins&gt;.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Ar ei farwolaeth ym 1957 fe olynwyd McPherson fel ysgrifennydd cyffredinol y Sefydliad gan ei fab.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Ar ei farwolaeth ym 1957 fe olynwyd McPherson fel ysgrifennydd cyffredinol y Sefydliad gan ei fab.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Cylchgrawn y Sefydliad yw &#039;&#039;The Quarry Manager&#039;s Journal&#039;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;, &lt;/del&gt;y mae ôl-rifynnau i&#039;w cael mewn llawer o gasgliadau archifol chwareli yn yr ardal.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Cylchgrawn y Sefydliad yw &#039;&#039;The Quarry Manager&#039;s Journal&#039;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;; &lt;/ins&gt;y mae ôl-rifynnau i&#039;w cael mewn llawer o gasgliadau archifol chwareli yn yr ardal.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Cyfaill Eben</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3554&amp;oldid=prev</id>
		<title>Irion am 16:56, 5 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3554&amp;oldid=prev"/>
		<updated>2018-06-05T16:56:13Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 17:56, 5 Mehefin 2018&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &amp;#039;&amp;#039;&amp;#039;Y Sefydliad Chwarelydda&amp;#039;&amp;#039;&amp;#039; â&amp;#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&amp;#039;n sefydliad ar draws Prydain Fawr, gan mae rheolwr chwareli ithfaen yn [[Uwchgwyrfai]], [[Simon McPherson]], a&amp;#039;i sefydlodd ym 1917.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &amp;#039;&amp;#039;&amp;#039;Y Sefydliad Chwarelydda&amp;#039;&amp;#039;&amp;#039; â&amp;#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&amp;#039;n sefydliad ar draws Prydain Fawr, gan mae rheolwr chwareli ithfaen yn [[Uwchgwyrfai]], [[Simon McPherson]], a&amp;#039;i sefydlodd ym 1917.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Yn 1917 fe alwodd McPherson gyfarfod yng ngwesty Tywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;Y Diwydiant Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Y Ganolfan &lt;/del&gt;Cerrig &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Genedlaethol&lt;/del&gt;, (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Yn 1917 fe alwodd McPherson gyfarfod yng ngwesty Tywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;Y Diwydiant Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Canolfan Genedlaethol &lt;/ins&gt;Cerrig , (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Ar ei farwolaeth ym 1957 fe olynwyd McPherson fel ysgrifennydd cyffredinol y Sefydliad gan ei fab.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Ar ei farwolaeth ym 1957 fe olynwyd McPherson fel ysgrifennydd cyffredinol y Sefydliad gan ei fab.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3553&amp;oldid=prev</id>
		<title>Irion am 16:54, 5 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3553&amp;oldid=prev"/>
		<updated>2018-06-05T16:54:59Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 17:54, 5 Mehefin 2018&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;&#039;Y Sefydliad Chwarelydda&#039;&#039;&#039; â&#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&#039;n sefydliad ar draws Prydain Fawr, gan mae rheolwr chwareli ithfaen yn [[Uwchgwyrfai]], [[Simon McPherson]] a&#039;i sefydlodd ym 1917.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;&#039;Y Sefydliad Chwarelydda&#039;&#039;&#039; â&#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&#039;n sefydliad ar draws Prydain Fawr, gan mae rheolwr chwareli ithfaen yn [[Uwchgwyrfai]], [[Simon McPherson]]&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;, &lt;/ins&gt;a&#039;i sefydlodd ym 1917.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Yn 1917 fe alwodd McPherson gyfarfod yng &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ngwestyTywysog &lt;/del&gt;Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;Y Diwydiant Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), Y Ganolfan Cerrig Genedlaethol, (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Yn 1917 fe alwodd McPherson gyfarfod yng &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ngwesty Tywysog &lt;/ins&gt;Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;Y Diwydiant Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), Y Ganolfan Cerrig Genedlaethol, (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Ar ei farwolaeth ym 1957 fe olynwyd McPherson fel ysgrifennydd cyffredinol y Sefydliad gan ei fab.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Ar ei farwolaeth ym 1957 fe olynwyd McPherson fel ysgrifennydd cyffredinol y Sefydliad gan ei fab.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3552&amp;oldid=prev</id>
		<title>Irion am 16:54, 5 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3552&amp;oldid=prev"/>
		<updated>2018-06-05T16:54:06Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 17:54, 5 Mehefin 2018&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;Y Sefydliad Chwarelydda&#039;&#039; â&#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&#039;n sefydliad ar draws Prydain Fawr, gan mae rheolwr chwareli ithfaen yn [[Uwchgwyrfai]], [[Simon McPherson]] a&#039;i sefydlodd ym 1917.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&lt;/ins&gt;&#039;&#039;Y Sefydliad Chwarelydda&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&lt;/ins&gt;&#039;&#039; â&#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&#039;n sefydliad ar draws Prydain Fawr, gan mae rheolwr chwareli ithfaen yn [[Uwchgwyrfai]], [[Simon McPherson]] a&#039;i sefydlodd ym 1917.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Yn 1917 fe alwodd McPherson gyfarfod yng ngwestyTywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&amp;#039;&amp;#039;Institute of Quarrying&amp;#039;&amp;#039; neu &amp;#039;&amp;#039;IoQ&amp;#039;&amp;#039; ), ac fe&amp;#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &amp;#039;&amp;#039;Y Diwydiant Chwarelydda yng Nghymru&amp;#039;&amp;#039; (dwyieithog), Y Ganolfan Cerrig Genedlaethol, (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&amp;#039;i enwi&amp;#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Yn 1917 fe alwodd McPherson gyfarfod yng ngwestyTywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&amp;#039;&amp;#039;Institute of Quarrying&amp;#039;&amp;#039; neu &amp;#039;&amp;#039;IoQ&amp;#039;&amp;#039; ), ac fe&amp;#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &amp;#039;&amp;#039;Y Diwydiant Chwarelydda yng Nghymru&amp;#039;&amp;#039; (dwyieithog), Y Ganolfan Cerrig Genedlaethol, (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&amp;#039;i enwi&amp;#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3537&amp;oldid=prev</id>
		<title>Irion am 09:12, 4 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3537&amp;oldid=prev"/>
		<updated>2018-06-04T09:12:11Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 10:12, 4 Mehefin 2018&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l5&quot;&gt;Llinell 5:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 5:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Ar ei farwolaeth ym 1957 fe olynwyd McPherson fel ysgrifennydd cyffredinol y Sefydliad gan ei fab.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Ar ei farwolaeth ym 1957 fe olynwyd McPherson fel ysgrifennydd cyffredinol y Sefydliad gan ei fab.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Cylchgrawn y Sefydliad yw &#039;&#039;The Quarry Manager&#039;s Journal&#039;&#039;, y mae &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ol&lt;/del&gt;-rifynnau i&#039;w cael mewn llawer o gasgliadau archifol chwareli yn yr ardal.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Cylchgrawn y Sefydliad yw &#039;&#039;The Quarry Manager&#039;s Journal&#039;&#039;, y mae &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ôl&lt;/ins&gt;-rifynnau i&#039;w cael mewn llawer o gasgliadau archifol chwareli yn yr ardal.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3536&amp;oldid=prev</id>
		<title>Irion am 09:11, 4 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3536&amp;oldid=prev"/>
		<updated>2018-06-04T09:11:56Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 10:11, 4 Mehefin 2018&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &amp;#039;&amp;#039;Y Sefydliad Chwarelydda&amp;#039;&amp;#039; â&amp;#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&amp;#039;n sefydliad ar draws Prydain Fawr, gan mae rheolwr chwareli ithfaen yn [[Uwchgwyrfai]], [[Simon McPherson]] a&amp;#039;i sefydlodd ym 1917.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &amp;#039;&amp;#039;Y Sefydliad Chwarelydda&amp;#039;&amp;#039; â&amp;#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&amp;#039;n sefydliad ar draws Prydain Fawr, gan mae rheolwr chwareli ithfaen yn [[Uwchgwyrfai]], [[Simon McPherson]] a&amp;#039;i sefydlodd ym 1917.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Yn 1917 fe alwodd McPherson gyfarfod yng ngwestyTywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Chwareli Cymru&lt;/del&gt;&#039;&#039; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[I&#039;w gadarnhau]&lt;/del&gt;&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Yn 1917 fe alwodd McPherson gyfarfod yng ngwestyTywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Y Diwydiant Chwarelydda yng Nghymru&lt;/ins&gt;&#039;&#039; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;(dwyieithog), Y Ganolfan Cerrig Genedlaethol, (Wirksworth, 2014)&lt;/ins&gt;&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Ar ei farwolaeth ym 1957 fe olynwyd McPherson fel ysgrifennydd cyffredinol y Sefydliad gan ei fab.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Ar ei farwolaeth ym 1957 fe olynwyd McPherson fel ysgrifennydd cyffredinol y Sefydliad gan ei fab.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3528&amp;oldid=prev</id>
		<title>Irion am 08:54, 4 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3528&amp;oldid=prev"/>
		<updated>2018-06-04T08:54:52Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 09:54, 4 Mehefin 2018&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;Y Sefydliad Chwarelydda&#039;&#039; â&#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&#039;n sefydliad ar draws Prydain Fawr, gan mae rheolwr chwareli ithfaen yn [[Uwchgwyrfai]], Simon McPherson a&#039;i sefydlodd ym 1917.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;Y Sefydliad Chwarelydda&#039;&#039; â&#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&#039;n sefydliad ar draws Prydain Fawr, gan mae rheolwr chwareli ithfaen yn [[Uwchgwyrfai]], &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[&lt;/ins&gt;Simon McPherson&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]] &lt;/ins&gt;a&#039;i sefydlodd ym 1917.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Yn 1917 fe alwodd McPherson gyfarfod yng ngwestyTywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&amp;#039;&amp;#039;Institute of Quarrying&amp;#039;&amp;#039; neu &amp;#039;&amp;#039;IoQ&amp;#039;&amp;#039; ), ac fe&amp;#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &amp;#039;&amp;#039;Chwareli Cymru&amp;#039;&amp;#039; [I&amp;#039;w gadarnhau]&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&amp;#039;i enwi&amp;#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Yn 1917 fe alwodd McPherson gyfarfod yng ngwestyTywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&amp;#039;&amp;#039;Institute of Quarrying&amp;#039;&amp;#039; neu &amp;#039;&amp;#039;IoQ&amp;#039;&amp;#039; ), ac fe&amp;#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &amp;#039;&amp;#039;Chwareli Cymru&amp;#039;&amp;#039; [I&amp;#039;w gadarnhau]&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&amp;#039;i enwi&amp;#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3527&amp;oldid=prev</id>
		<title>Irion am 08:54, 4 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3527&amp;oldid=prev"/>
		<updated>2018-06-04T08:54:31Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 09:54, 4 Mehefin 2018&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;Y Sefydliad Chwarelydda&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&quot; &lt;/del&gt;â&#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&#039;n sefydliad ar draws Prydain Fawr, gan mae rheolwr chwareli ithfaen yn [[Uwchgwyrfai]], Simon McPherson a&#039;i sefydlodd ym 1917.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae &#039;&#039;Y Sefydliad Chwarelydda&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;&#039; &lt;/ins&gt;â&#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&#039;n sefydliad ar draws Prydain Fawr, gan mae rheolwr chwareli ithfaen yn [[Uwchgwyrfai]], Simon McPherson a&#039;i sefydlodd ym 1917.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Yn 1917 fe alwodd McPherson gyfarfod yng ngwestyTywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd. Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Yn 1917 fe alwodd McPherson gyfarfod yng ngwestyTywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;Chwareli Cymru&#039;&#039; [I&#039;w gadarnhau]&amp;lt;/ref&amp;gt; &lt;/ins&gt;Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&amp;lt;/ref&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Ar ei farwolaeth ym 1957 fe olynwyd McPherson fel ysgrifennydd cyffredinol y Sefydliad gan ei fab.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Ar ei farwolaeth ym 1957 fe olynwyd McPherson fel ysgrifennydd cyffredinol y Sefydliad gan ei fab.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l8&quot;&gt;Llinell 8:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 8:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{eginyn}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;==Cyfeiriadau==&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;{{cyfeiriadau}}&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Categori:Chwarelydda]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Categori:Chwarelydda]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3526&amp;oldid=prev</id>
		<title>Irion: Crëwyd tudalen newydd yn dechrau gyda &#039;Mae &#039;&#039;Y Sefydliad Chwarelydda&quot; â&#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&#039;n sefydliad ar draws Prydain Fawr, gan mae rheolwr chwareli ithfaen yn Uw...&#039;</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Y_Sefydliad_Chwarelydda&amp;diff=3526&amp;oldid=prev"/>
		<updated>2018-06-04T08:50:02Z</updated>

		<summary type="html">&lt;p&gt;Crëwyd tudalen newydd yn dechrau gyda &amp;#039;Mae &amp;#039;&amp;#039;Y Sefydliad Chwarelydda&amp;quot; â&amp;#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&amp;#039;n sefydliad ar draws Prydain Fawr, gan mae rheolwr chwareli ithfaen yn Uw...&amp;#039;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;Tudalen newydd&lt;/b&gt;&lt;/p&gt;&lt;div&gt;Mae &amp;#039;&amp;#039;Y Sefydliad Chwarelydda&amp;quot; â&amp;#039;i wreiddiau yn Uwchgwyrfai er iddo ddatblygu&amp;#039;n sefydliad ar draws Prydain Fawr, gan mae rheolwr chwareli ithfaen yn [[Uwchgwyrfai]], Simon McPherson a&amp;#039;i sefydlodd ym 1917.&lt;br /&gt;
&lt;br /&gt;
Yn 1917 fe alwodd McPherson gyfarfod yng ngwestyTywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&amp;#039;&amp;#039;Institute of Quarrying&amp;#039;&amp;#039; neu &amp;#039;&amp;#039;IoQ&amp;#039;&amp;#039; ), ac fe&amp;#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd. Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&amp;#039;i enwi&amp;#039;n McPherson House i anrhydeddu ei sylfaenwr.&lt;br /&gt;
&lt;br /&gt;
Ar ei farwolaeth ym 1957 fe olynwyd McPherson fel ysgrifennydd cyffredinol y Sefydliad gan ei fab.&lt;br /&gt;
&lt;br /&gt;
Cylchgrawn y Sefydliad yw &amp;#039;&amp;#039;The Quarry Manager&amp;#039;s Journal&amp;#039;&amp;#039;, y mae ol-rifynnau i&amp;#039;w cael mewn llawer o gasgliadau archifol chwareli yn yr ardal.&lt;br /&gt;
&lt;br /&gt;
{{eginyn}}&lt;br /&gt;
&lt;br /&gt;
[[Categori:Chwarelydda]]&lt;/div&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
</feed>