North Cynon Valley, Seam Plans

Scope and Content

Plans covering the North Cynon Valley, an arbitrary division which includes plans showing colliery workings in various seams in the areas surrounding Aberdare and areas to the north of Aberdare. The plans cover the areas of Aberdare, Trecynon, Cwmbach and Hirwaun. There is also a set of plans covering the area from Hirwaun to Mountain Ash.