Page:Transactions of the Geological Society, 1st series, vol. 4.djvu/47

The four workable Seams of the preceding Section are, Benwell main, Beaumont seam, Low main, Lox Low main.
Seams of Coal at West Denton or Baker's main.
				Ft.	In.
Beaumont Seam	at	30	fathoms	3	3
Low Main		49		2	10
Low Low main		50		2	11
────────────────

Strata sunk through in the F Pit Wall's-end Colliery.

	Fs.	Ft.	In.			Fs.	Ft.	In.
Strong clay with tumblers	8	4	─	Brought forward		64	3	4
Brown post	2	1	─	Thil		─	2	─
Soft Metal stone	4	─	─	Grey Metal stone		1	1	─
White post	─	1	─	Grey post		─	5	─
Metal stone	5	─	─	Black stone		─	3	8
Grey post	2	1	─	Coal		─	─	4
Metal stone	1	1	4	Thil		─	2	6
Whin	─	─	8	Grey Metal stone		─	2	6
White post	9	1	6	Grey post		─	1	6
Ditto and grey post	5	─	─	White post		─	4	6
Black stone	─	4	─	Black stone		─	1	8
Coal	─	─	8	Coal		─	─	11
Thil	─	2	─	Thil		─	2	─
Grey post	─	4	6	Grey Metal stone		4	1	─
White post	─	1	6	Coal (A)		─	─	3
Whin	─	1	3	Grey Metal stone		2	─	9
Grey post	1	1	─	Grey post	[1]$\left\{{\begin{matrix}\ \\\ \end{matrix}}\right.$	2	─	9
Blue metal stone	─	3	6	White post		4	4	3
Grey post	2	─	6	Blue stone		─	─	6
Blue metal stone	2	─	8	Grey post		─	3	─
Grey post	1	─	─	Black stone		─	1	─
Whin	─	2	4	Grey post		─	5	6
White post	2	3	2	Blue Metal stone		─	1	8
Black stone	─	2	─	Black stone		─	1	4
Coal	─	─	2	Grey post		1	3	─
Grey Thil	2	1	4	Black stone[2]		3	─	4
Grey post	─	5	─	Coal		─	─	3
Whin	─	2	─	Grey Thil		─	1	8
White post	─	─	6	White post	[3]$\left\{{\begin{matrix}\ \\\ \\\ \\\ \end{matrix}}\right.$	2	─	─
Whin	─	2	3	Whin (very irregular)		─	4	─
White post	6	5	9	White post		3	─	─
Coal	─	─	8	Whin (very irregular)		─	4	6
Grey Thil	─	1	8	White post		─	3	─
Grey post	─	5	─	Grey post with scares		3	─	─
Blue Metal stone	1	2	─	Grey Metal stone		─	5	7
Coal	─	1	2	Main Coal Seam (B)[4]		1	1	$\scriptstyle {\frac {1}{2}}$
Thil	─	─	3	Outset of the Pit		─	3	─
Coal	─	─	10
	─────────					─────────
Carried forward	63	3	4	Total		103	2	11$\scriptstyle {\frac {1}{2}}$

1. Commonly called the 70 fathom Post.
2. Black Stone.
3. Main Post.
4. In the middle of the Main Coal seam is a band of 2$\scriptstyle {\frac {1}{4}}$ inches duck. This band lies only in a particular tract of the mine.