This drift, near Thwaite in Swaledale, worked the Tan Hill coal, here called the Stockdale Seam. It had two levels, plus one in the shale above the seam, and worked a seam which dipped at 1 in 12 to the north-west. The seam section was:-

Coal 19 inches
Dirt Band 3
Dirt Band
Coal 15

The mine, which closed in 1931 and was abandoned in April 1932, reputedly sold its coal at 4d per cwt.

Gill, M.C. “Great Dales Coalfield, Eastern Areas” British Mining No.86 (2008), pp.68-108

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