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	<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?action=history&amp;feed=atom&amp;title=Chwarel_Cefn_Graeanog</id>
	<title>Chwarel Cefn Graeanog - Hanes golygu</title>
	<link rel="self" type="application/atom+xml" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?action=history&amp;feed=atom&amp;title=Chwarel_Cefn_Graeanog"/>
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	<updated>2026-06-21T22:26:44Z</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=Chwarel_Cefn_Graeanog&amp;diff=14353&amp;oldid=prev</id>
		<title>Irion am 11:56, 19 Rhagfyr 2022</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Chwarel_Cefn_Graeanog&amp;diff=14353&amp;oldid=prev"/>
		<updated>2022-12-19T11:56:41Z</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 12:56, 19 Rhagfyr 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;Chwarel Cefn Graeanog&#039;&#039;&#039; yn chwarel cerrig bach a gro a sefydlwyd i godi agregau ar gyfer y gwaith o adeiladu gwaith trydan pwmpio dŵr yn Ninorwig ddiwedd y 1970au. Aethpwyd ati i godi&#039;r agregau o gefnen o dir i&#039;r gorllewin o briffordd yr A487, nid nepell o bentref [[Pant-glas]]. Yn ogystal â&#039;r ffaith fod yr agregau&#039;n hawdd i&#039;w codi yno, trwy gymryd haen drwchus o&#039;r gwaddodion o Oes yr Iâ sydd ar y safle, roedd hen drac rheilffordd gerllaw y gellid ei dario i ffurfio lôn breifat ar gyfer y lliaws o lorïau a ddeuai i&#039;r safle bryd hynny. Hyd heddiw, gelwir y lôn honno&#039;n &quot;Lôn Loris&quot; gan bobl leol er i&#039;r lôn droi&#039;n llwybr cerdded a beicio ers blynyddoedd, sef [[Lôn Eifion]]. Gorfennodd lorïau ei defnyddio wedi i waith Dinorwig gael ei gwblhau.&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;Chwarel Cefn Graeanog&#039;&#039;&#039; yn chwarel cerrig bach a gro a sefydlwyd &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;tua 1960 &lt;/ins&gt;i godi agregau ar gyfer y gwaith o adeiladu &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;atomfeydd mawrion. Wedyn, bu&#039;n cyflenwi&#039;r &lt;/ins&gt;gwaith &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;o adeiladu gorsaf &lt;/ins&gt;trydan pwmpio dŵr yn Ninorwig ddiwedd y 1970au. Aethpwyd ati i godi&#039;r agregau o gefnen o dir i&#039;r gorllewin o briffordd yr A487, nid nepell o bentref [[Pant-glas]]. Yn ogystal â&#039;r ffaith fod yr agregau&#039;n hawdd i&#039;w codi yno, trwy gymryd haen drwchus o&#039;r gwaddodion o Oes yr Iâ sydd ar y safle, roedd hen drac rheilffordd gerllaw y gellid ei dario i ffurfio lôn breifat ar gyfer y lliaws o lorïau a ddeuai i&#039;r safle bryd hynny. Hyd heddiw, gelwir y lôn honno&#039;n &quot;Lôn Loris&quot; gan bobl leol er i&#039;r lôn droi&#039;n llwybr cerdded a beicio ers blynyddoedd, sef [[Lôn Eifion]]. Gorfennodd lorïau ei defnyddio wedi i waith Dinorwig gael ei gwblhau.&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;Y dull o weithio&amp;#039;r chwarel oedd codi wyneb y tir, cloddio am yr agregau, ac wedyn ail-osod y pridd a dychwelyd y tir i ddefnydd amaethyddol i raddau helaeth.&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;Y dull o weithio&amp;#039;r chwarel oedd codi wyneb y tir, cloddio am yr agregau, ac wedyn ail-osod y pridd a dychwelyd y tir i ddefnydd amaethyddol i raddau helaeth.&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=Chwarel_Cefn_Graeanog&amp;diff=12950&amp;oldid=prev</id>
		<title>Cyfaill Eben am 14:39, 18 Chwefror 2022</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Chwarel_Cefn_Graeanog&amp;diff=12950&amp;oldid=prev"/>
		<updated>2022-02-18T14:39:53Z</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 15:39, 18 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;Chwarel Cefn Graeanog&#039;&#039;&#039; yn chwarel cerrig bach a gro a sefydlwyd i godi agregau ar gyfer y gwaith o &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;godi &lt;/del&gt;gwaith trydan &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;pympio &lt;/del&gt;dŵr yn Ninorwig ddiwedd y 1970au. Aethpwyd ati i godi&#039;r agregau o gefnen o dir i&#039;r gorllewin o briffordd yr A487, nid nepell o bentref [[Pant-glas]]. Yn ogystal â&#039;r ffaith fod yr agregau&#039;n hawdd i&#039;w codi yno, trwy gymryd haen &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;trwchus &lt;/del&gt;o&#039;r gwaddodion o Oes yr Iâ sydd ar y safle, roedd hen drac rheilffordd gerllaw y gellid ei &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;thario &lt;/del&gt;i ffurfio lôn breifat ar gyfer y &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;miloedd &lt;/del&gt;o &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;deithiau lori - hyd &lt;/del&gt;heddiw, gelwir y lôn honno&#039;n &quot;Lôn Loris&quot; gan bobl leol er i&#039;r lôn droi&#039;n llwybr cerdded a &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;seiclo &lt;/del&gt;ers blynyddoedd, sef [[Lôn Eifion]]. Gorfennodd lorïau ei defnyddio wedi i waith Dinorwig gael ei gwblhau.&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;Chwarel Cefn Graeanog&#039;&#039;&#039; yn chwarel cerrig bach a gro a sefydlwyd i godi agregau ar gyfer y gwaith o &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;adeiladu &lt;/ins&gt;gwaith trydan &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;pwmpio &lt;/ins&gt;dŵr yn Ninorwig ddiwedd y 1970au. Aethpwyd ati i godi&#039;r agregau o gefnen o dir i&#039;r gorllewin o briffordd yr A487, nid nepell o bentref [[Pant-glas]]. Yn ogystal â&#039;r ffaith fod yr agregau&#039;n hawdd i&#039;w codi yno, trwy gymryd haen &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;drwchus &lt;/ins&gt;o&#039;r gwaddodion o Oes yr Iâ sydd ar y safle, roedd hen drac rheilffordd gerllaw y gellid ei &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;dario &lt;/ins&gt;i ffurfio lôn breifat ar gyfer y &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;lliaws &lt;/ins&gt;o &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;lorïau a ddeuai i&#039;r safle bryd hynny. Hyd &lt;/ins&gt;heddiw, gelwir y lôn honno&#039;n &quot;Lôn Loris&quot; gan bobl leol er i&#039;r lôn droi&#039;n llwybr cerdded a &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;beicio &lt;/ins&gt;ers blynyddoedd, sef [[Lôn Eifion]]. Gorfennodd lorïau ei defnyddio wedi i waith Dinorwig gael ei gwblhau.&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;Y dull o weithio&#039;r chwarel oedd &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;cymryd &lt;/del&gt;wyneb y tir &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;i ffwrdd&lt;/del&gt;, cloddio am yr agregau,ac wedyn &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ailosod &lt;/del&gt;y pridd a dychwelyd y tir i ddefnydd amaethyddol i raddau helaeth.&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;Y dull o weithio&#039;r chwarel oedd &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;codi &lt;/ins&gt;wyneb y tir, cloddio am yr agregau, ac wedyn &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ail-osod &lt;/ins&gt;y pridd a dychwelyd y tir i ddefnydd amaethyddol i raddau helaeth.&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;Golygodd gwaith y chwarel ddinistrio nifer o olion archaeolegol ond bu Ymddiriedolaeth Archaeolegol Gwynedd wrthi&#039;n cloddio a chofnodi&#039;r hyn oedd i&#039;w &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;cael &lt;/del&gt;cyn ei ddinistrio. Mae arteffactau a safleoedd eraill wedi dod i&#039;r amlwg wrth i&#039;r gwaith &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ledu&lt;/del&gt;. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Ym 12016&lt;/del&gt;, daethpwyd o hyd i fynwent o&#039;r Oes Efydd, yn cynnwys crochenwaith tua 4,000 oed.&amp;lt;ref&amp;gt;&#039;&#039;Daily Post&#039;&#039;, 31.12.2016&amp;lt;/ref&amp;gt;[[Delwedd:Cloddio yng Nghefn Graeanog c1980.jpg|bawd|250px|de|Cloddio ar safle&#039;r Chwarel, tua 1980]]&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;Golygodd gwaith y chwarel ddinistrio nifer o olion archaeolegol ond bu Ymddiriedolaeth Archaeolegol Gwynedd wrthi&#039;n cloddio a chofnodi&#039;r hyn oedd i&#039;w &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;weld &lt;/ins&gt;cyn &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;iddo gael &lt;/ins&gt;ei ddinistrio. Mae arteffactau a safleoedd eraill wedi dod i&#039;r amlwg wrth i&#039;r gwaith &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ymledu&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Yn 2016&lt;/ins&gt;, daethpwyd o hyd i fynwent o&#039;r Oes Efydd, yn cynnwys crochenwaith tua 4,000 oed.&amp;lt;ref&amp;gt;&#039;&#039;Daily Post&#039;&#039;, 31.12.2016&amp;lt;/ref&amp;gt;[[Delwedd:Cloddio yng Nghefn Graeanog c1980.jpg|bawd|250px|de|Cloddio ar safle&#039;r Chwarel, tua 1980]]&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;Erbyn hyn mae&amp;#039;r chwarel yn rhan o Grŵp Tudor Griffiths.&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;Erbyn hyn mae&amp;#039;r chwarel yn rhan o Grŵp Tudor Griffiths.&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=Chwarel_Cefn_Graeanog&amp;diff=5996&amp;oldid=prev</id>
		<title>Gwylan am 09:09, 21 Mai 2019</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Chwarel_Cefn_Graeanog&amp;diff=5996&amp;oldid=prev"/>
		<updated>2019-05-21T09:09:54Z</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 10:09, 21 Mai 2019&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-l3&quot;&gt;Llinell 3:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 3:&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;Y dull o weithio&amp;#039;r chwarel oedd cymryd wyneb y tir i ffwrdd, cloddio am yr agregau,ac wedyn ailosod y pridd a dychwelyd y tir i ddefnydd amaethyddol i raddau helaeth.&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;Y dull o weithio&amp;#039;r chwarel oedd cymryd wyneb y tir i ffwrdd, cloddio am yr agregau,ac wedyn ailosod y pridd a dychwelyd y tir i ddefnydd amaethyddol i raddau helaeth.&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;Golygodd gwaith y chwarel ddinistrio nifer o olion archaeolegol ond bu Ymddiriedolaeth Archaeolegol Gwynedd wrthi&#039;n cloddio a chofnodi&#039;r hyn oedd i&#039;w cael cyn ei ddinistrio. Mae arteffactau a safleoedd eraill wedi dod i&#039;r amlwg wrth i&#039;r gwaith ledu. Ym 12016, daethpwyd o hyd i fynwent o&#039;r Oes Efydd, yn cynnwys crochenwaith tua 4,000 oed.&amp;lt;ref&amp;gt;&#039;&#039;Daily Post&#039;&#039;, 31.12.2016&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;Golygodd gwaith y chwarel ddinistrio nifer o olion archaeolegol ond bu Ymddiriedolaeth Archaeolegol Gwynedd wrthi&#039;n cloddio a chofnodi&#039;r hyn oedd i&#039;w cael cyn ei ddinistrio. Mae arteffactau a safleoedd eraill wedi dod i&#039;r amlwg wrth i&#039;r gwaith ledu. Ym 12016, daethpwyd o hyd i fynwent o&#039;r Oes Efydd, yn cynnwys crochenwaith tua 4,000 oed.&amp;lt;ref&amp;gt;&#039;&#039;Daily Post&#039;&#039;, 31.12.2016&amp;lt;/ref&amp;gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Delwedd:Cloddio yng Nghefn Graeanog c1980.jpg|bawd|250px|de|Cloddio ar safle&#039;r Chwarel, tua 1980]]&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;Erbyn hyn mae&amp;#039;r chwarel yn rhan o Grŵp Tudor Griffiths.&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;Erbyn hyn mae&amp;#039;r chwarel yn rhan o Grŵp Tudor Griffiths.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Gwylan</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Chwarel_Cefn_Graeanog&amp;diff=5995&amp;oldid=prev</id>
		<title>Gwylan am 17:34, 20 Mai 2019</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Chwarel_Cefn_Graeanog&amp;diff=5995&amp;oldid=prev"/>
		<updated>2019-05-20T17:34:22Z</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 18:34, 20 Mai 2019&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-l3&quot;&gt;Llinell 3:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 3:&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;Y dull o weithio&amp;#039;r chwarel oedd cymryd wyneb y tir i ffwrdd, cloddio am yr agregau,ac wedyn ailosod y pridd a dychwelyd y tir i ddefnydd amaethyddol i raddau helaeth.&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;Y dull o weithio&amp;#039;r chwarel oedd cymryd wyneb y tir i ffwrdd, cloddio am yr agregau,ac wedyn ailosod y pridd a dychwelyd y tir i ddefnydd amaethyddol i raddau helaeth.&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;Golygodd gwaith y chwarel ddinistrio nifer o olion archaeolegol ond bu Ymddiriedolaeth Archaeolegol Gwynedd wrthi&#039;n cloddio a chofnodi&#039;r hyn oedd i&#039;w cael cyn ei ddinistrio.&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;Golygodd gwaith y chwarel ddinistrio nifer o olion archaeolegol ond bu Ymddiriedolaeth Archaeolegol Gwynedd wrthi&#039;n cloddio a chofnodi&#039;r hyn oedd i&#039;w cael cyn ei ddinistrio&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;. Mae arteffactau a safleoedd eraill wedi dod i&#039;r amlwg wrth i&#039;r gwaith ledu. Ym 12016, daethpwyd o hyd i fynwent o&#039;r Oes Efydd, yn cynnwys crochenwaith tua 4,000 oed.&amp;lt;ref&amp;gt;&#039;&#039;Daily Post&#039;&#039;, 31.12.2016&amp;lt;/ref&amp;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;/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;Erbyn hyn mae&#039;r chwarel yn rhan o Grŵp Tudor Griffiths&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;{{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>Gwylan</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Chwarel_Cefn_Graeanog&amp;diff=5993&amp;oldid=prev</id>
		<title>92.3.7.12 am 17:27, 20 Mai 2019</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Chwarel_Cefn_Graeanog&amp;diff=5993&amp;oldid=prev"/>
		<updated>2019-05-20T17:27:59Z</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 18:27, 20 Mai 2019&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;Chwarel Cefn Graeanog&#039;&#039;&#039; yn chwarel cerrig bach a gro a sefydlwyd i godi agregau ar gyfer y gwaith o godi gwaith trydan pympio dŵr yn Ninorwig ddiwedd y 1970au. Aethpwyd ati i godi&#039;r agregau o gefnen o dir i&#039;r gorllewin o briffordd yr A487, nid nepell o bentref [[Pant-glas]]. Yn ogystal â&#039;r ffaith fod yr agregau&#039;n hawdd i&#039;w codi yno, trwy gymryd haen trwchus o&#039;r gwaddodion o Oes yr Iâ sydd ar y safle, roedd hen drac rheilffordd gerllaw y gellid ei thario i ffurfio lôn breifat ar gyfer y miloedd o deithiau lori - hyd heddiw, gelwir y lôn honno&#039;n &quot;Lôn Loris&quot; gan bobl leol er i&#039;r lôn droi&#039;n llwybr cerdded a seiclo ers blynyddoedd, sef [[Lôn Eifion]]. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Gofennodd &lt;/del&gt;lorïau ei defnyddio wedi i waith Dinorwig gael ei gwblhau.&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;Chwarel Cefn Graeanog&#039;&#039;&#039; yn chwarel cerrig bach a gro a sefydlwyd i godi agregau ar gyfer y gwaith o godi gwaith trydan pympio dŵr yn Ninorwig ddiwedd y 1970au. Aethpwyd ati i godi&#039;r agregau o gefnen o dir i&#039;r gorllewin o briffordd yr A487, nid nepell o bentref [[Pant-glas]]. Yn ogystal â&#039;r ffaith fod yr agregau&#039;n hawdd i&#039;w codi yno, trwy gymryd haen trwchus o&#039;r gwaddodion o Oes yr Iâ sydd ar y safle, roedd hen drac rheilffordd gerllaw y gellid ei thario i ffurfio lôn breifat ar gyfer y miloedd o deithiau lori - hyd heddiw, gelwir y lôn honno&#039;n &quot;Lôn Loris&quot; gan bobl leol er i&#039;r lôn droi&#039;n llwybr cerdded a seiclo ers blynyddoedd, sef [[Lôn Eifion]]. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Gorfennodd &lt;/ins&gt;lorïau ei defnyddio wedi i waith Dinorwig gael ei gwblhau.&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;Y dull o weithio&#039;r chwarel oedd cymryd wyneb y tir i ffwrdd, cloddio&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;r &lt;/del&gt;agregau,ac wedyn ailosod y pridd a dychwelyd y tir i ddefnydd amaethyddol i raddau helaeth.&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;Y dull o weithio&#039;r chwarel oedd cymryd wyneb y tir i ffwrdd, cloddio &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;am yr &lt;/ins&gt;agregau,ac wedyn ailosod y pridd a dychwelyd y tir i ddefnydd amaethyddol i raddau helaeth.&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;/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;Golygodd gwaith y chwarel ddinistrio nifer o olion archaeolegol ond bu Ymddiriedolaeth Archaeolegol Gwynedd wrthi&#039;n cloddio a chofnodi&#039;r hyn oedd i&#039;w cael cyn ei ddinistrio.&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;/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;{{eginyn}}&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;{{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;[[Categori:Chwareli agregau]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>92.3.7.12</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Chwarel_Cefn_Graeanog&amp;diff=5992&amp;oldid=prev</id>
		<title>Gwylan: Crëwyd tudalen newydd yn dechrau gyda &#039;Mae &#039;&#039;&#039;Chwarel Cefn Graeanog&#039;&#039;&#039; yn chwarel cerrig bach a gro a sefydlwyd i godi agregau ar gyfer y gwaith o godi gwaith trydan pympio dŵr yn Ninorwig ddi...&#039;</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Chwarel_Cefn_Graeanog&amp;diff=5992&amp;oldid=prev"/>
		<updated>2019-05-20T10:10:29Z</updated>

		<summary type="html">&lt;p&gt;Crëwyd tudalen newydd yn dechrau gyda &amp;#039;Mae &amp;#039;&amp;#039;&amp;#039;Chwarel Cefn Graeanog&amp;#039;&amp;#039;&amp;#039; yn chwarel cerrig bach a gro a sefydlwyd i godi agregau ar gyfer y gwaith o godi gwaith trydan pympio dŵr yn Ninorwig ddi...&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;&amp;#039;Chwarel Cefn Graeanog&amp;#039;&amp;#039;&amp;#039; yn chwarel cerrig bach a gro a sefydlwyd i godi agregau ar gyfer y gwaith o godi gwaith trydan pympio dŵr yn Ninorwig ddiwedd y 1970au. Aethpwyd ati i godi&amp;#039;r agregau o gefnen o dir i&amp;#039;r gorllewin o briffordd yr A487, nid nepell o bentref [[Pant-glas]]. Yn ogystal â&amp;#039;r ffaith fod yr agregau&amp;#039;n hawdd i&amp;#039;w codi yno, trwy gymryd haen trwchus o&amp;#039;r gwaddodion o Oes yr Iâ sydd ar y safle, roedd hen drac rheilffordd gerllaw y gellid ei thario i ffurfio lôn breifat ar gyfer y miloedd o deithiau lori - hyd heddiw, gelwir y lôn honno&amp;#039;n &amp;quot;Lôn Loris&amp;quot; gan bobl leol er i&amp;#039;r lôn droi&amp;#039;n llwybr cerdded a seiclo ers blynyddoedd, sef [[Lôn Eifion]]. Gofennodd lorïau ei defnyddio wedi i waith Dinorwig gael ei gwblhau.&lt;br /&gt;
&lt;br /&gt;
Y dull o weithio&amp;#039;r chwarel oedd cymryd wyneb y tir i ffwrdd, cloddio&amp;#039;r agregau,ac wedyn ailosod y pridd a dychwelyd y tir i ddefnydd amaethyddol i raddau helaeth.&lt;/div&gt;</summary>
		<author><name>Gwylan</name></author>
	</entry>
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