Hartley Colliery

Nightingale Pit

Account of Strata sunk through below the Benton Seam to the Yard Coal Seam, in the Nightingale Pit, Hartley Colliery

Shaft Details

Approximate surface level 111 feet above sea (Ordnance datum)

Geology encountered	Thickness		Depth
	ft.	in.	ft.	in.
From surface to Benton or High Main Seam	90	0	90	0
Sharp blue stone	21	0	111	0
Sharp blue stone	9	0	120	0
Soft grey metal	18	0	138	0
Strong grey metal, with post girdles	16	4	154	4
COAL	1	8	156	0
Grey metal	18	0	174	0
Blue metal	18	0	192	0
White post	72	0	264	0
Blue stone	6	0	270	0
COAL - Yard Coal Seam	3	6	273	6
To Low Main Seam	162	0	435	6

Source: An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume F-K, published by the North of England Institute of Mining & Mechanical Engineers, 1885

original entry for sinking/boring number 1062 in "An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume F-K, published by the North of England Institute of Mining & Mechanical Engineers, 1885"

main page for Hartley Colliery



Mail: Webmaster	Back	Home	Copyright © 1999-2008 by The Durham Mining Museum and its contributors Registered Charity No: 1110608 Page last updated: 14 Dec 2007	Search	Print