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started quarrying in this area, which was known for its slate beds. The exact location of this original quarry has been obliterated by subsequent mining activity, but it is likely that it was part of what became
Diphwys Casson. In 1800 quarry managers William Turne, Thomas Wright,
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The quarry was successful in the period 1820–1880, but it ran into difficulties and production ceased in 1890. Working restarted in 1920, but this lasted only seven years before the quarry was again abandoned.
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To the north east of the town of
Blaenau Ffestiniog is the valley of Cenunant y Diphwys. In the 1760s men led by Methusalem Jones, from the long established
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borrowed his name to the lease on the quarry. They substantially expanded the workings. By 1820, underground mining had started.
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Diphwys Casson closed in 1955 after almost two centuries of operation.
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were involved with the quarry, and also
William Casson from the
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507:"Maenofferen Slate Quarry, Blaenau Ffestiniog, North Wales"
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Gwynfor Pierce Jones and Dafydd Walter Dafis (2002).
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360:"Water Power in the Slate Mines of East Ffestiniog"
304:Method used for underground slate quarrying in the
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902:Portmadoc, Beddgelert and South Snowdon Railway
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33:The remains of the main Diphwys Casson mill
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321:was laid, connecting the quarry with the
887:Gorseddau Junction And Portmadoc Railway
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257:. It was one of the major users of the
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329:terminus in Blaenau Ffestiniog. This
7:
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413:"Diphwys Quarry, Blaenau Ffestiniog"
537:. You can help Knowledge (XXG) by
14:
892:North Wales Narrow Gauge Railways
1685:
942:
930:
831:Ffestiniog Railway rolling stock
525:
483:The Festiniog Railway (Volume 1)
55:
48:
27:
917:Welsh Highland Heritage Railway
533:This article about mining is a
1:
882:Festiniog and Blaenau Railway
426:Richards, Alun John (1995).
452:"History of Plas-Blaenddol"
1740:
897:Porthmadog cross town link
805:The Spooners of Porthmadog
520:
481:Boyd, James I.C. (1975a).
1679:
925:
428:Slate Quarrying in Wales'
339:Votty & Bowydd Quarry
43:
26:
1507:Rhiw-goch (Denbighshire)
1053:Fron-Boeth and Pant-Mawr
511:peoplescollection.wales
430:. Gwasg Carreg Gwalch.
1719:Slate mines in Gwynedd
1492:Deeside and Moelfferna
912:Welsh Highland Railway
795:Robert Francis Fairlie
393:Cite journal requires
309:
501:History of the quarry
337:was also used by the
303:
284:Thomas Asseston Smith
228:Diphwys Casson quarry
63:Diphwys Casson quarry
22:Diphwys Casson quarry
991:Welsh slate quarries
230:(sometimes known as
213:1800-1890; 1920-1927
1631:Frongoch (Aberdyfi)
657:Campbell's Platform
128: /
23:
1724:Ffestiniog Railway
1113:Votty & Bowydd
999:Blaenau Ffestiniog
851:Fairlie locomotive
769:Votty & Bowydd
688:Boston Lodge Works
672:Blaenau Ffestiniog
622:Porthmadog Harbour
608:Ffestiniog Railway
323:Ffestiniog Railway
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306:Blaenau Ffestiniog
259:Ffestiniog Railway
247:Blaenau Ffestiniog
85:Blaenau Ffestiniog
1701:
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1580:Dandderwen quarry
1393:Rhiw-goch (Conwy)
1270:Bryn Hafod-y-Wern
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937:Trains portal
877:Cwmorthin Tramway
627:Boston Lodge Halt
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467:, pp. 46–47.
454:. 30 August 2016.
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16:Former slate mine
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1692:Wales portal
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865:Related railways
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365:. Archived from
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395:|journal=
372:on 19 May 2012
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1714:Mining stubs
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1661:Rhyd-yr-Onen
1656:Penrhyn-gwyn
1442:Nantlle Vale
1314:Chwarel Fawr
1280:Pantdreiniog
1206:Aberllefenni
1187:Dulas Valley
1177:Tal y Mieryn
1047:
1043:Cwt y Bugail
856:Dandy waggon
790:Henry Archer
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724:Cwt y Bugail
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539:expanding it
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386:cite journal
374:. Retrieved
367:the original
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333:operated by
318:
317:In 1864 the
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150:SH7142946270
69:Location in
18:
1611:Bryn Eglwys
1536:Ty'n-y-coed
1497:Moel y Faen
1437:Moel Tryfan
1403:Ty'n-y-bryn
1363:Chwarel Ddu
1290:Tan-y-Bwlch
1157:Gartheiniog
1068:Maenofferen
1018:Blaen y Cwm
815:Alan Pegler
744:Maenofferen
704:Blaen y Cwm
667:Tanygrisiau
652:Tan-y-Bwlch
255:North Wales
135: /
111:Coordinates
1708:Categories
1571:Llangolman
1468:Llangollen
1457:Tal-y-Sarn
1447:Pen-y-Bryn
1373:Cwm Eigiau
1275:Moel Faban
1241:Llwyngwern
1211:Braichgoch
1201:Abercorris
1167:Maesygamfa
1152:Foel Dinas
1142:Cae Abatty
1133:Aberangell
475:Work cited
465:Boyd 1975a
345:References
280:Hugh Jones
187:Discovered
157:Production
120:52°59′53″N
1651:Glyn-lago
1606:Bellstone
1546:Goleuwern
1422:Alexandra
1383:Hafod-Las
1324:Glyrhonwy
1300:Llanberis
1162:Hendreddu
1098:Penmachno
1063:Llechwedd
1058:Graig Ddu
1038:Cwmorthin
739:Llechwedd
734:Graig Ddu
719:Cwmorthin
647:Plas Halt
642:Rhiw Goch
632:Minffordd
313:Transport
123:3°54′58″W
1666:Rosebush
1616:Cwm Ebol
1599:Outliers
1551:Hen-Ddol
1531:Bryngwyn
1482:Cambrian
1466:Vale of
1432:Dorothea
1329:Marchlyn
1319:Dinorwic
1261:Bethesda
1216:Cambergi
1103:Rhiwbach
836:Princess
764:Rhiwbach
697:Quarries
615:Stations
162:Products
81:Location
39:Location
1646:Gilfach
1626:Dolgoch
1502:Penarth
1427:Cilgwyn
1309:Cefn Du
1285:Penrhyn
1246:Ratgoed
1231:Gaewern
1221:Cymerau
1172:Minllyn
1118:Wrysgan
1108:Rhosydd
1088:Oakeley
1078:Moelwyn
1033:Croesor
1028:Conglog
1003:Croesor
774:Wrysgan
759:Oakeley
714:Conglog
662:Dduallt
637:Penrhyn
376:26 July
331:incline
275:Nantlle
265:History
251:Gwynedd
200: (
182:History
101:Country
95:Gwynedd
71:Gwynedd
1641:Glogue
1621:Darren
1522:Arthog
1487:Clogau
1477:Berwyn
1358:Cedryn
1334:Vivian
1236:Hengae
783:People
434:
327:Duffws
308:region
243:quarry
218:Closed
210:Active
195:Opened
176:Quarry
91:County
1512:Wynne
1348:Conwy
1344:Lledr
1135:areas
1073:Manod
1011:areas
370:(PDF)
363:(PDF)
273:near
240:slate
190:1760s
166:Slate
105:Wales
1573:Area
1524:area
1470:area
1415:area
1398:Rhos
1378:Foel
1346:and
1302:area
1263:area
1189:area
1130:and
1093:Parc
1007:and
535:stub
432:ISBN
399:help
378:2019
282:and
221:1955
202:1800
198:1800
172:Type
1226:Era
846:Lyd
325:'s
234:or
1710::
1001:,
509:.
485:.
390::
388:}}
384:{{
341:.
261:.
253:,
249:,
1005:,
983:e
976:t
969:v
600:e
593:t
586:v
566:e
559:t
552:v
541:.
513:.
489:.
440:.
415:.
401:)
397:(
380:.
204:)
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