Fochriw Opencast Workings
The seams worked were Fochriw below and Rhondda No3 above. Please refer to Coal Authority plan No 2138.
Work was between June 1965 and February 1967.
Both sides of the mountain were worked, the Fochriw side being twice the area of the Pontlottyn side. The total area being 79.72 acres with a total coal recovery of 53,223 tons. There were 259 cubic yards of voids in the Rhondda No3 seam and none in the Fochriw seam. The vertical distance from the base of the Rhondda No3 seam to the base of the Fochriw seam was approximately 56 feet.
Another site was worked by Ryans, which was underneath the land once occupied by the South Tunnel coal tips. Please refer to Coal Authority plan No 2722
Coaling commenced on 25 March 1972 and was completed on 26 May 1973. The total area was 108.4 acres and 10,141 tons of coal were recovered.
There were 881 cubic yards of voids in the Tyladu seam and none in the Fochriw seam and the seperation of the seams was 80 feet