Featured a deep shaft, initially sunk to 452 feet and then bored to 702 feet to reach deeper seams. A Cornish pumping engine was installed in the 1870s to manage groundwater issues.
- 1841- T. Winnall and G. Jaynes
- 1880-1885 J. Chivers & Co.
- 1890-1896 A.C. Bright & Co.
The Small Profit Gales were awarded in 1841 to Thomas Winnall and George Jaynes, but the project was soon abandoned due to excessive water ingress. In 1874, John Chivers revived the colliery, installing a Cornish pumping engine, and by 1876, the workings had reached the Coleford High Delf seam. The colliery was acquired by A. C. Bright & Co. Ltd. in 1893, but the company went into liquidation by 1895. The main shaft, originally sunk to 452 feet and later bored to 702 feet, was reopened in 1932 to serve as a ventilation shaft and secondary egress for Northern United Colliery
Publications (5)
- Bent pp 24 – 29
- Oldham, Tony (1998); Mines of the Forest of Dean; 86 pages
- Pearce p 116 Used as a dump for sludge from the water treatment works at Wigpool
- Pope and Karau 1997 p248 – 249
- Trotter p 36, 81
