https://cof.canolfanuwchgwyrfai.cymru/index.php?action=history&feed=atom&title=Mangan%C3%AEs_y_Gurn_Ddu 2026-06-06T07:02:00Z Hanes diwygio'r dudalen hon ar y wici MediaWiki 1.43.1 https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Mangan%C3%AEs_y_Gurn_Ddu&diff=13200&oldid=prev 2022-03-24T12:01:34Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="cy"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Fersiwn hŷn</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Fersiwn yn ôl 13:01, 24 Mawrth 2022</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Llinell 1:</td> <td colspan="2" class="diff-lineno">Llinell 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="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;"><div>Mae olion cloddiant am fwyn Manganîs ar hyd carneddi’r Gurn Ddu, yn ardal [[Llanaelhaearn]]. Ceir un o’r tyllau hyn yn [[Y Seler Ddu]] ac fe'i gelwid yn waith Seler Ddu neu waith Bwlch Mawr.</div></td><td class="diff-marker" data-marker="+"></td><td style="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;"><div>Mae olion cloddiant am fwyn <ins style="font-weight: bold; text-decoration: none;">'''</ins>Manganîs ar hyd carneddi’r Gurn Ddu<ins style="font-weight: bold; text-decoration: none;">'''</ins>, yn ardal [[Llanaelhaearn]]. Ceir un o’r tyllau hyn yn [[Y Seler Ddu]] ac fe'i gelwid yn waith Seler Ddu neu waith Bwlch Mawr.</div></td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>   </div></td><td class="diff-marker"></td><td style="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;"><div>   </div></td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>Gellir gweld yr olion hyn ar fap, drwy ddefnyddio cyfeirnod grid SH431471.</div></td><td class="diff-marker"></td><td style="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;"><div>Gellir gweld yr olion hyn ar fap, drwy ddefnyddio cyfeirnod grid SH431471.</div></td></tr> </table>

Irion https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Mangan%C3%AEs_y_Gurn_Ddu&diff=13188&oldid=prev 2022-03-22T16:49:18Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="cy"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Fersiwn hŷn</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Fersiwn yn ôl 17:49, 22 Mawrth 2022</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Llinell 1:</td> <td colspan="2" class="diff-lineno">Llinell 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="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;"><div>Mae olion <del style="font-weight: bold; text-decoration: none;">o gloddiant mwyn </del>Manganîs ar hyd carneddi’r Gurn Ddu, yn ardal [[Llanaelhaearn]]. <del style="font-weight: bold; text-decoration: none;">Geir </del>un o’r tyllau hyn yn [[Y Seler Ddu]] ac fe'i <del style="font-weight: bold; text-decoration: none;">elwid </del>yn waith Seler Ddu neu waith Bwlch Mawr.</div></td><td class="diff-marker" data-marker="+"></td><td style="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;"><div>Mae olion <ins style="font-weight: bold; text-decoration: none;">cloddiant am fwyn </ins>Manganîs ar hyd carneddi’r Gurn Ddu, yn ardal [[Llanaelhaearn]]. <ins style="font-weight: bold; text-decoration: none;">Ceir </ins>un o’r tyllau hyn yn [[Y Seler Ddu]] ac fe'i <ins style="font-weight: bold; text-decoration: none;">gelwid </ins>yn waith Seler Ddu neu waith Bwlch Mawr.</div></td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>   </div></td><td class="diff-marker"></td><td style="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;"><div>   </div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="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;"><div>Gellir gweld ar fap <del style="font-weight: bold; text-decoration: none;">yr olion rhain</del>, drwy ddefnyddio cyfeirnod grid SH431471.</div></td><td class="diff-marker" data-marker="+"></td><td style="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;"><div>Gellir gweld <ins style="font-weight: bold; text-decoration: none;">yr olion hyn </ins>ar fap, drwy ddefnyddio cyfeirnod grid SH431471.</div></td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>   </div></td><td class="diff-marker"></td><td style="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;"><div>   </div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="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;"><div>Nid oedd y diwydiant hwn mor <del style="font-weight: bold; text-decoration: none;">lwyddiannus </del>a’r diwydiant <del style="font-weight: bold; text-decoration: none;">llechi </del>a oedd yn ffynnu yn yr ardal. Er hyn, gellir gweld fod y carneddi wedi bod o ddiddordeb mawr, gan fod hen <del style="font-weight: bold; text-decoration: none;">olion </del>aneddiadau yno sy’n <del style="font-weight: bold; text-decoration: none;">dyddio </del>i’r oes efydd.</div></td><td class="diff-marker" data-marker="+"></td><td style="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;"><div>Nid oedd y diwydiant hwn mor <ins style="font-weight: bold; text-decoration: none;">llwyddiannus </ins>a’r diwydiant <ins style="font-weight: bold; text-decoration: none;">ithfaen </ins>a oedd yn ffynnu yn yr ardal. Er hyn, gellir gweld fod y carneddi wedi bod o ddiddordeb mawr, gan fod <ins style="font-weight: bold; text-decoration: none;">olion </ins>hen aneddiadau yno sy’n <ins style="font-weight: bold; text-decoration: none;">perthyn </ins>i’r oes efydd.</div></td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>   </div></td><td class="diff-marker"></td><td style="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;"><div>   </div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="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;"><div>Rhwng 1872 a 1876, roedd y gloddfa manganîs yn cynhyrchu allbwn o 50 tunnell, ac yn cael ei <del style="font-weight: bold; text-decoration: none;">redeg </del>gan John Cowper.</div></td><td class="diff-marker" data-marker="+"></td><td style="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;"><div>Rhwng 1872 a 1876, roedd y gloddfa manganîs yn cynhyrchu allbwn o 50 tunnell, ac yn cael ei <ins style="font-weight: bold; text-decoration: none;">rhedeg </ins>gan John Cowper.</div></td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>   </div></td><td class="diff-marker"></td><td style="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;"><div>   </div></td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>==Ffynonellau==</div></td><td class="diff-marker"></td><td style="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;"><div>==Ffynonellau==</div></td></tr> </table>

Cyfaill Eben https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Mangan%C3%AEs_y_Gurn_Ddu&diff=7252&oldid=prev 2020-01-10T10:26:03Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="cy"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Fersiwn hŷn</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Fersiwn yn ôl 11:26, 10 Ionawr 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l16">Llinell 16:</td> <td colspan="2" class="diff-lineno">Llinell 16:</td></tr> <tr><td class="diff-marker"></td><td style="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;"><br></td><td class="diff-marker"></td><td style="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;"><br></td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>[[Categori: Diwydiant a Masnach]]</div></td><td class="diff-marker"></td><td style="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;"><div>[[Categori: Diwydiant a Masnach]]</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="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;"><div><ins style="font-weight: bold; text-decoration: none;">[[Categori:Manganîs]]</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="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;"><div><ins style="font-weight: bold; text-decoration: none;">[[Categori:Mwynau]]</ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="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;"><div><ins style="font-weight: bold; text-decoration: none;">[[Categori:Mwyngloddio]]</ins></div></td></tr> </table>

Irion https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Mangan%C3%AEs_y_Gurn_Ddu&diff=7236&oldid=prev 2020-01-10T09:51:14Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="cy"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Fersiwn hŷn</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Fersiwn yn ôl 10:51, 10 Ionawr 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Llinell 1:</td> <td colspan="2" class="diff-lineno">Llinell 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="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;"><div>Mae olion o gloddiant mwyn Manganîs ar hyd carneddi’r Gurn Ddu, yn ardal [[Llanaelhaearn]]. <del style="font-weight: bold; text-decoration: none;">Gelwir </del>un o’r tyllau <del style="font-weight: bold; text-decoration: none;">rhain </del>yn <del style="font-weight: bold; text-decoration: none;">y ''</del>'Seler Ddu<del style="font-weight: bold; text-decoration: none;">''' neu’r '''</del>Bwlch Mawr<del style="font-weight: bold; text-decoration: none;">''' hefyd</del>.</div></td><td class="diff-marker" data-marker="+"></td><td style="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;"><div>Mae olion o gloddiant mwyn Manganîs ar hyd carneddi’r Gurn Ddu, yn ardal [[Llanaelhaearn]]. <ins style="font-weight: bold; text-decoration: none;">Geir </ins>un o’r tyllau <ins style="font-weight: bold; text-decoration: none;">hyn </ins>yn <ins style="font-weight: bold; text-decoration: none;">[[Y Seler Ddu]] ac fe</ins>'<ins style="font-weight: bold; text-decoration: none;">i elwid yn waith </ins>Seler Ddu <ins style="font-weight: bold; text-decoration: none;">neu waith </ins>Bwlch Mawr.</div></td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>   </div></td><td class="diff-marker"></td><td style="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;"><div>   </div></td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>Gellir gweld ar fap yr olion rhain, drwy ddefnyddio cyfeirnod grid SH431471.</div></td><td class="diff-marker"></td><td style="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;"><div>Gellir gweld ar fap yr olion rhain, drwy ddefnyddio cyfeirnod grid SH431471.</div></td></tr> </table>

Irion https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Mangan%C3%AEs_y_Gurn_Ddu&diff=3657&oldid=prev 2018-06-19T12:56:03Z

<p>Symudodd Heulfryn y dudalen <a href="/index.php?title=Mangan%C3%AEs_y_Gyrn_Ddu&amp;action=edit&amp;redlink=1" class="new" title="Manganîs y Gyrn Ddu (nid yw&#039;r dudalen yn bodoli)">Manganîs y Gyrn Ddu</a> i <a href="/wici/Mangan%C3%AEs_y_Gurn_Ddu" title="Manganîs y Gurn Ddu">Manganîs y Gurn Ddu</a> heb adael dolen ailgyfeirio</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <tr class="diff-title" lang="cy"> <td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">← Fersiwn hŷn</td> <td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">Fersiwn yn ôl 13:56, 19 Mehefin 2018</td> </tr><tr><td colspan="2" class="diff-notice" lang="cy"><div class="mw-diff-empty">(Dim gwahaniaeth)</div> </td></tr></table>

Irion https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Mangan%C3%AEs_y_Gurn_Ddu&diff=3656&oldid=prev 2018-06-19T12:26:16Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="cy"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Fersiwn hŷn</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Fersiwn yn ôl 13:26, 19 Mehefin 2018</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Llinell 1:</td> <td colspan="2" class="diff-lineno">Llinell 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="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;"><div>Mae olion o gloddiant mwyn Manganîs ar hyd carneddi’r <del style="font-weight: bold; text-decoration: none;">Gyrn </del>Ddu, yn ardal [[Llanaelhaearn]]. Gelwir un o’r tyllau rhain yn y '''Seler Ddu''' neu’r '''Bwlch Mawr''' hefyd.</div></td><td class="diff-marker" data-marker="+"></td><td style="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;"><div>Mae olion o gloddiant mwyn Manganîs ar hyd carneddi’r <ins style="font-weight: bold; text-decoration: none;">Gurn </ins>Ddu, yn ardal [[Llanaelhaearn]]. Gelwir un o’r tyllau rhain yn y '''Seler Ddu''' neu’r '''Bwlch Mawr''' hefyd.</div></td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>   </div></td><td class="diff-marker"></td><td style="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;"><div>   </div></td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>Gellir gweld ar fap yr olion rhain, drwy ddefnyddio cyfeirnod grid SH431471.</div></td><td class="diff-marker"></td><td style="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;"><div>Gellir gweld ar fap yr olion rhain, drwy ddefnyddio cyfeirnod grid SH431471.</div></td></tr> </table>

Irion https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Mangan%C3%AEs_y_Gurn_Ddu&diff=1071&oldid=prev 2017-12-11T18:39:55Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="cy"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Fersiwn hŷn</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Fersiwn yn ôl 19:39, 11 Rhagfyr 2017</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l6">Llinell 6:</td> <td colspan="2" class="diff-lineno">Llinell 6:</td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>   </div></td><td class="diff-marker"></td><td style="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;"><div>   </div></td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>Rhwng 1872 a 1876, roedd y gloddfa manganîs yn cynhyrchu allbwn o 50 tunnell, ac yn cael ei redeg gan John Cowper.</div></td><td class="diff-marker"></td><td style="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;"><div>Rhwng 1872 a 1876, roedd y gloddfa manganîs yn cynhyrchu allbwn o 50 tunnell, ac yn cael ei redeg gan John Cowper.</div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="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;"><div><del style="font-weight: bold; text-decoration: none;"> </del></div></td><td colspan="2" class="diff-side-added"></td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>   </div></td><td class="diff-marker"></td><td style="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;"><div>   </div></td></tr> <tr><td class="diff-marker"></td><td style="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;"><div>==Ffynonellau==</div></td><td class="diff-marker"></td><td style="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;"><div>==Ffynonellau==</div></td></tr> </table>

Miriamlloydjones https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Mangan%C3%AEs_y_Gurn_Ddu&diff=1070&oldid=prev 2017-12-11T18:39:43Z

<p>Crëwyd tudalen newydd yn dechrau gyda &#039;Mae olion o gloddiant mwyn Manganîs ar hyd carneddi’r Gyrn Ddu, yn ardal <a href="/wici/Llanaelhaearn" title="Llanaelhaearn">Llanaelhaearn</a>. Gelwir un o’r tyllau rhain yn y &#039;&#039;&#039;Seler Ddu&#039;&#039;&#039; neu’r &#039;...&#039;</p> <p><b>Tudalen newydd</b></p><div>Mae olion o gloddiant mwyn Manganîs ar hyd carneddi’r Gyrn Ddu, yn ardal [[Llanaelhaearn]]. Gelwir un o’r tyllau rhain yn y &#039;&#039;&#039;Seler Ddu&#039;&#039;&#039; neu’r &#039;&#039;&#039;Bwlch Mawr&#039;&#039;&#039; hefyd.<br /> <br /> Gellir gweld ar fap yr olion rhain, drwy ddefnyddio cyfeirnod grid SH431471.<br /> <br /> Nid oedd y diwydiant hwn mor lwyddiannus a’r diwydiant llechi a oedd yn ffynnu yn yr ardal. Er hyn, gellir gweld fod y carneddi wedi bod o ddiddordeb mawr, gan fod hen olion aneddiadau yno sy’n dyddio i’r oes efydd.<br /> <br /> Rhwng 1872 a 1876, roedd y gloddfa manganîs yn cynhyrchu allbwn o 50 tunnell, ac yn cael ei redeg gan John Cowper.<br /> <br /> <br /> ==Ffynonellau==<br /> <br /> [http://www.nmrs.org.uk/assets/lookinside/bm14lookinside.pdf The Manganese Mines of North Wales, British Mining No. 14, C.G. Down]<br /> <br /> [http://www.coflein.gov.uk/cy/site/308167/details/gyrn-ddu-n-settlement-ii Cofnod o Garneddi’r Gyrn Ddu ar wefan y Comisiwn Brenhinol]<br /> <br /> [http://www.coflein.gov.uk/cy/site/420415/details/seler-ddu-manganese-mineblwch-mawr-mine Cofnod o’r gloddfa manganis ar wefan y Comisiwn Brenhinol]<br /> <br /> [[Categori: Diwydiant a Masnach]]</div>

Miriamlloydjones