No . 2 upcast shaft was sunk in 1873 and deepened to the Arley mine, a hot mine where temperatures reached 100 Fahrenheit, at 935 yards.
12.
The Upcast shaft was used to transport men and was sunk to both the Beeston and Black Bed, the latter being at a depth of 240 yards from the surface.
13.
In 1921, two vertical shafts were commenced, a winding shaft 4.3m by 1.8m to a depth of 11m and an upcast shaft 3.7m by 2.1m to a depth of 109m.
14.
In an effort to recover lost output, the Middle Pit shaft ( formerly the Ragman ) was deepened to the Hardmine seam in 1881, and a new upcast shaft to replace the Laura was sunk to the Cockshead seam.
15.
The upcast shaft is on top of the hill overlooking the yard of the Tanfield Railway, and the two caps covering the coal-drawing shafts can be found in a gully just to the north of it, hidden among the trees.
16.
Andrew Knowles and Sons relined the upcast shaft in 1872 reducing its diameter to 7 feet 2 inches, giving Pendleton the record for the narrowest shaft . In 1891 the company decided to modernise the colliery by sinking two 16 feet-diameter shafts but water from old workings broke through causing flooding and subsidence and the shafts were abandoned.
17.
The colliery infrastructure consisted of : 1-Downcast shaft & winding engine house; 2-upcast shaft and winding engine / cum pump house; 3-engineer's and blacksmith's shops; 4-winch house; 5-store; 6-office; 7-boiler house and chimney; 8-screening house; 9-fan / compressor house; 10-wagon traverser; 11-underground band haulage.
