Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,103 pages of information and 233,633 images on early companies, their products and the people who designed and built them.
Thomas Joseph opened the Dunraven steam-coal collieries and pits near the head of the Rhondda valley.
He sold these collieries one after the other.
1880s Dunraven was in trouble during the period of depressed prices
By 1890 it was being worked to considerable advantage.