Originally featured four shafts and extensive underground levels, many of which linked with nearby pits such as New Dunn, Oak/Primrose, and Tufton Deep Pit. The brick-built engine house with a hipped roof once operated winding gear for shafts 3 and 4. Two main levels extended northwards, forming a labyrinthine network of passages—some reaching over 1,000 yards in length. Today, little masonry survives, and all shafts are filled or capped.

Extensively worked beneath Milkwall from 1852 to 1890, yielding approximately 282,000 tons of ore. The operation resumed briefly in 1900, producing around 7,000 tons, before being abandoned in May 1918. The mine had four shafts, with the main (deep) shaft, No. 3, being driven WNW at 345 feet depth. Shaft No. 1, or Turpin Pit, was 300 feet deep, and No. 4, the pumping shaft, was 420 feet deep but unproductive. Water is still pumped electrically from No. 4. After closure, some buildings were reused by the British Colour and Mining Co. Ltd, which produced pigments like ochre until around 1975.