Throckley Colliery
Isabella Pit
Sinking Account of the Isabella Pit, Throckley Colliery. Commenced April 25th, 1867
Shaft Details
Sunk: 25 Apr 1867, Closed: Jan 1954
Approximate surface level 40 feet above sea (Ordnance datum)
Switch to measurements in:
fathoms, feet & inches, or metres


 

 
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|
| Geology encountered |
Thickness |
|
Depth |
| |
ft. |
in. |
|
ft. |
in. |
| Sand and gravel |
12 |
0 |
|
12 |
0 |
| Clay |
1 |
0 |
|
13 |
0 |
| Post |
15 |
0 |
|
28 |
0 |
| Clay |
1 |
0 |
|
29 |
0 |
| COAL |
0 |
3 |
|
29 |
3 |
| Metal, with post |
5 |
0 |
|
34 |
3 |
| Post |
1 |
8 |
|
35 |
11 |
| Metal |
4 |
0 |
|
39 |
11 |
| COAL - Ruler Seam |
1 |
7 |
|
41 |
6 |
| Post and metal |
5 |
0 |
|
46 |
6 |
| Metal |
7 |
0 |
|
53 |
6 |
| Post |
1 |
0 |
|
54 |
6 |
| Blue metal |
8 |
0 |
|
62 |
6 |
| Grey post |
8 |
3 |
|
70 |
9 |
| Blue metal |
1 |
4 |
|
72 |
1 |
| Post |
4 |
9 |
|
76 |
10 |
| Seggar clay |
0 |
7 |
|
77 |
5 |
| Blue metal, with girdles |
8 |
0 |
|
85 |
5 |
| Grey post, with metal |
8 |
10 |
|
94 |
3 |
| White post |
5 |
2 |
|
99 |
5 |
| Whin |
1 |
6 |
|
100 |
11 |
| Grey post |
1 |
7 |
|
102 |
6 |
| Black stone |
1 |
7 |
|
104 |
1 |
| COAL |
0 |
4 |
|
104 |
5 |
| (Drift between pits here.) |
0 |
0 |
|
104 |
5 |
| Seggar clay |
5 |
0 |
|
109 |
5 |
| Black stone |
1 |
9 |
|
111 |
2 |
| COAL |
0 |
5 |
|
111 |
7 |
| Grey metal |
0 |
9 |
|
112 |
4 |
| Post girdle |
1 |
2 |
|
113 |
6 |
| Marl |
0 |
6 |
|
114 |
0 |
| Blue metal |
4 |
0 |
|
118 |
0 |
| Grey metal |
8 |
6 |
|
126 |
6 |
| Post |
9 |
1 |
|
135 |
7 |
| Whin |
2 |
0 |
|
137 |
7 |
| Post |
0 |
5 |
|
138 |
0 |
| Whin |
1 |
6 |
|
139 |
6 |
| Post |
12 |
10 |
|
152 |
4 |
| Blue metal |
0 |
6 |
|
152 |
10 |
| Post |
4 |
5 |
|
157 |
3 |
| COAL - Engine Seam |
4 |
6 |
|
161 |
9 |
| COAL |
0 |
7 |
|
|
|
| Band |
0 |
2 |
|
|
|
| COAL |
3 |
9 |
|
|
|
| Good seggar clay |
2 |
6 |
|
164 |
3 |
| Seggar clay, mixed with post |
3 |
0 |
|
167 |
3 |
| COAL - Hodge Seam |
2 |
0 |
|
169 |
3 |
| Grey post |
1 |
6 |
|
170 |
9 |
| White post |
3 |
4 |
|
174 |
1 |
| Grey metal |
3 |
2 |
|
177 |
3 |
| Black stone |
0 |
4 |
|
177 |
7 |
| COAL - Tilly Seam |
2 |
6 |
|
180 |
1 |
| Seggar clay |
2 |
4 |
|
182 |
5 |
| Grey metal |
1 |
0 |
|
183 |
5 |
| Whin |
2 |
6 |
|
185 |
11 |
| Blue metal |
1 |
10 |
|
187 |
9 |
| COAL - Hand Coal Seam |
0 |
1 |
|
187 |
10 |
| Seggar clay |
1 |
6 |
|
189 |
4 |
| Grey post |
6 |
6 |
|
195 |
10 |
| Strong grey post |
5 |
9 |
|
201 |
7 |
| Whin |
1 |
6 |
|
203 |
1 |
| Grey post |
4 |
3 |
|
207 |
4 |
| Whin |
1 |
2 |
|
208 |
6 |
| Blue stone |
0 |
6 |
|
209 |
0 |
| White post |
0 |
4 |
|
209 |
4 |
| Grey post |
7 |
2 |
|
216 |
6 |
| COAL - Stone Coal Seam |
3 |
1 |
|
219 |
7 |
| COAL |
2 |
6 |
|
|
|
| Seggar band |
0 |
3 |
|
|
|
| COAL |
0 |
4 |
|
|
|
| Seggar clay |
1 |
0 |
|
220 |
7 |
| Grey post girdles |
3 |
4 |
|
223 |
11 |
| White post |
11 |
2 |
|
235 |
1 |
| COAL - Main Coal Seam |
3 |
10 |
|
238 |
11 |
| COAL, good |
3 |
6 |
|
|
|
| COAL, coarse |
0 |
4 |
|
|
|
| NOTE.ùThe depth at the opposite side of pit is 40 fs. 3 ft. 0 in., caused by a hitch running across seggar clay and post. |
0 |
0 |
|
238 |
11 |
| Recommenced at + |
4 |
1 |
|
243 |
0 |
| Seggar |
2 |
7 |
|
245 |
7 |
| Grey metal |
18 |
5 |
|
264 |
0 |
| Hard post |
7 |
3 |
|
271 |
3 |
| (Water about 730 gals. per minute.) |
0 |
0 |
|
271 |
3 |
| Blue metal |
5 |
11 |
|
277 |
2 |
| COAL |
3 |
3 |
|
280 |
5 |
| Grey metal |
14 |
6 |
|
294 |
11 |
| Seggar clay |
2 |
0 |
|
296 |
11 |
| Black metal |
5 |
2 |
|
302 |
1 |
| COAL |
0 |
4 |
|
302 |
5 |
| Post |
2 |
0 |
|
304 |
5 |
| Blue metal |
7 |
1 |
|
311 |
6 |
| Hard post |
2 |
0 |
|
313 |
6 |
| Blue metal |
2 |
0 |
|
315 |
6 |
| Post |
1 |
4 |
|
316 |
10 |
| Black shale, very soft |
0 |
8 |
|
317 |
6 |
| Strong post |
12 |
6 |
|
330 |
0 |
| Grey metal |
2 |
0 |
|
332 |
0 |
| COAL - Brockwell Seam |
4 |
6 |
|
336 |
6 |
| COAL, top |
0 |
9 |
|
|
|
| Band stone |
0 |
4 |
|
|
|
| COAL, good |
2 |
11 |
|
|
|
| Splint |
0 |
6 |
|
|
|
|
Source: An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume S-T, published by the North of England Institute of Mining & Mechanical Engineers, 1894
original entry for sinking/boring number 2014 in "An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume S-T, published by the North of England Institute of Mining & Mechanical Engineers, 1894"
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