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Hartley Colliery
Delaval Pit
Sunk at the Delaval Pit, Hartley Colliery, from the Surface to the Yard Coal
Shaft Details
Switch to measurements in:
fathoms, feet & inches, or metres
 
|
|
|
|
| Geology encountered |
Thickness |
|
Depth |
| |
ft. |
in. |
|
ft. |
in. |
| Outset soil and clay |
37 |
7 |
|
37 |
7 |
| Post and blue clay |
41 |
1 |
|
78 |
8 |
| White post - Main Post |
27 |
4 |
|
106 |
0 |
| White post - Main Post |
38 |
2 |
|
144 |
2 |
| COAL - High Main Seam |
6 |
9 |
|
150 |
11 |
| COAL |
5 |
2 |
|
|
|
| Clay |
0 |
3 |
|
|
|
| COAL, ground |
1 |
4 |
|
|
|
| Thill |
1 |
0 |
|
151 |
11 |
| Blue metal |
4 |
8 |
|
156 |
7 |
| Black metal |
5 |
1 |
|
161 |
8 |
| Blue metal |
21 |
5 |
|
183 |
1 |
| Black metal |
21 |
11 |
|
205 |
0 |
| Grey metal stone, with girdles |
21 |
1 |
|
226 |
1 |
| Blue metal |
3 |
11 |
|
230 |
0 |
| COAL - Grey Seam or Metal Coal |
1 |
10 |
|
231 |
10 |
| Thill |
0 |
5 |
|
232 |
3 |
| Grey metal, with post girdles |
10 |
1 |
|
242 |
4 |
| White post |
4 |
0 |
|
246 |
4 |
| Whin |
1 |
7 |
|
247 |
11 |
| White post |
3 |
3 |
|
251 |
2 |
| Blue metal |
4 |
6 |
|
255 |
8 |
| White post |
15 |
6 |
|
271 |
2 |
| Grey metal, with girdles |
2 |
8 |
|
273 |
10 |
| White post |
4 |
6 |
|
278 |
4 |
| Grey metal, with girdles |
2 |
8 |
|
281 |
0 |
| Blue metal, with catheads |
15 |
4 |
|
296 |
4 |
| White post |
18 |
0 |
|
314 |
4 |
| Blue metal |
5 |
6 |
|
319 |
10 |
| COAL - Yard Seam |
3 |
8 |
|
323 |
6 |
| Continued, July 1st, 1819 |
0 |
0 |
|
323 |
6 |
| Thill blue metal, with post girdles and foul coal |
11 |
0 |
|
334 |
6 |
| Grey metal stone |
14 |
0 |
|
348 |
6 |
| Grey metal stone |
5 |
0 |
|
353 |
6 |
| Blue stone |
13 |
0 |
|
366 |
6 |
| COAL, mixed with slaty stone |
2 |
0 |
|
368 |
6 |
| Grey metal stone, with post girdles |
20 |
0 |
|
388 |
6 |
| Grey metal stone |
11 |
0 |
|
399 |
6 |
| COAL, Coarse (1 yard thick at one side and 6 inches at the other) |
2 |
0 |
|
401 |
6 |
| Grey metal |
7 |
0 |
|
408 |
6 |
| Post girdle |
1 |
0 |
|
409 |
6 |
| Whin girdle |
1 |
0 |
|
410 |
6 |
| Grey metal |
12 |
0 |
|
422 |
6 |
| Black stone |
0 |
8 |
|
423 |
2 |
| COAL - Metal Coal Seam |
5 |
4 |
|
428 |
6 |
| COAL |
2 |
0 |
|
|
|
| Stone band |
1 |
2 |
|
|
|
| COAL |
2 |
2 |
|
|
|
| Grey post |
4 |
6 |
|
433 |
0 |
| Grey metal, with girdles |
9 |
0 |
|
442 |
0 |
| Whin girdle |
0 |
6 |
|
442 |
6 |
| Blue stone, with ironstone girdles |
7 |
0 |
|
449 |
6 |
| Whin girdle |
1 |
0 |
|
450 |
6 |
| White and grey post |
8 |
0 |
|
458 |
6 |
| Blue metal, with cathead girdles |
9 |
0 |
|
467 |
6 |
| Black stone |
1 |
0 |
|
468 |
6 |
| COAL - Main Coal Seam |
4 |
0 |
|
472 |
6 |
| Bored further :— |
0 |
0 |
|
472 |
6 |
| Strong white post |
25 |
0 |
|
497 |
6 |
| COAL |
0 |
6 |
|
498 |
0 |
| Thill |
0 |
10 |
|
498 |
10 |
| Strong grey metal, with strong post girdles |
17 |
7 |
|
516 |
5 |
| COAL |
0 |
10 |
|
517 |
3 |
| Thill |
3 |
0 |
|
520 |
3 |
| Strong blue metal |
18 |
0 |
|
538 |
3 |
| Strong grey metal, with post girdles |
6 |
3 |
|
544 |
6 |
| Blue metal, with thin girdles |
7 |
0 |
|
551 |
6 |
| Grey metal, with post girdles |
6 |
0 |
|
557 |
6 |
| Blue metal, with ironstone girdles |
36 |
0 |
|
593 |
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 1071 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"
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