The levels worked the Mynyddislwyn seam (SW114) for house coal.
There were 2 levels, & at least 2 air shafts.
The levels were known as the Gwrhay or Daren levels, being driven under Daren Felyn Farm.
The main roadway was 6 ½ feet high.
In 1842 the coal was entirely hand-won, and trammed out of the level by horses.

The old workings of Gwrhay Colliery were then driven through by levels which ran 700yrds from Islwyn colliery in 1918 to access a virgin take in the Mynyddislwyn seam.

We spoke to the landowner on a visit in December 2025, and she told us that spoil was taken to the tip by means of an aerial ropeway.

Mine owners:
Jeremiah Jones 1822
Moses Moses 1827
Aaron Crossfield 1841
Roger Lewis 1858-1870
D Lewis 1878-1882 (not worked)
Jones, Lewis & Co, manager T Edmunds 1884
Lewis Lewis 1900 (10 men working underground, 1 at surface)
Oakdale Navigation Colliery Co 1907 (23 men underground, 8 at surface)

Deaths recorded:
Pre 1842 (from the Royal Commision 1842) - “A Lad of 15 was killed in consequence of the top falling while he was holing the coal for blasting”
16/06/1858 - James Morgan (16, haulier) died after being hit by a dram
28/12/1866 - Phillip William (45, Collier) killed by a fall of roof
30/09/1871 - Lewis Edwards (50, Collier) killed by a fall of roof
04/08/1888 - David Herbert (36, Collier) killed by a fall of roof

History courtesy of user SJT