Very little remains on the mine site itself, the main remains are a winding drum at the top of an incline.

The plans show:

• Two drifts, one straight with the return air way snaking around the workings.
• There is a height difference of 153 between the top and bottom of the intake drift.
• The seam dips at 1 in 9 towards the South.
• Two Thomas and sons electric pumps. One 1/3rd of the way down the drift @ 2000 Gallons/hrs for 6 hours a day. And one at the bottom of the drift @ 4000 Gallons/hrs for 6 Hours a day.
• Last workings in the Upper Pinchin are dated mid 1966.

1933-37 New Yniscu Anthracite Colliery Co (Development work only)
1938-39 Yniscu Anthracite Colliery Co. Ltd
Mine Closed
1947-71 Yniscu Anthracite Colliery Co (Licensed by NCB)
1972 Mine Abandoned

This mine worked the Welsh,Lower Pinchin, Upper Pinchin (the main seam) and the Rhondda no2.