South Cynon Valley, Seam Plans

Scope and Content

Plans covering the South Cynon Valley area, an arbitrary division which includes plans showing workings in various seams in the areas south of Aberdare. The plans cover the areas of Aberdare, Abercwmboi, Mountain Ash, Penrhiwceiber, Abercynon, Ynysybwl and Pontypridd. There are also sets of plans covering the Cynon Valley and Merthyr area and plans relating to collieries in both the Cynon Valley and Aman Valley.