"Woodifield is another colliery, the property of Messrs. Bolckow, Vaughan & Co., who are working the Constantine, Ballarat, Little Seam, and the Two Foot. The two former are worked by drifts, and the latter two by shafts, at a depth of 15 fathoms. The output is about 200 tons per day, and the number of men and boys employed is nearly 200. Low Bitchburn Colliery, a little to the south west of Crook, gives employment to about 180, and is working the "Main Coal", 4 feet 6 inches ; "Top Main," 2 feet ; "Little Busty," 1 foot 8 inches ; and the "Big "Busty," 3 feet, by drifts, making and output of about 200 tons daily. This is entirely converted into coke."

- Whellan's 1894 Directory of County Durham (via Durham Mining Museum)