External Links
Publications (1)
- Hill, Alan; NMRS (2012); British Mining 94 - Coal: A Chronology for Britain; ISBN 0901450 6 85; pp.134.
Abercwmboi Colliery - 681m
Lletty Shenklin Colliery - 884m
Duffryn Old Colliery - 994m
Old Duffryn Colliery - 999m
Cwmpennar Colliery - 1,117m
Lower Duffryn Colliery - 1,138m
Upper Duffryn Colliery - 1,340m
Aberaman - 1,408m
Black Band Pit - 1,430m
Treaman Colliery - 1,539m
Cwmbach Colliery - 1,654m
Deep Duffryn - 1,722m
Abernant y Groes Colliery - 1,908m
Ynyscynon Colliery - 1,918m
George Pit - 1,931m
High Duffryn Colliery - 1,937m