Middridge Colliery
Charles Pit
Strata sunk through in the Charles Pit, at Middridge Colliery, and situate near to Middridge Village, about one mile from Shildon, in an Easterly diection
Shaft Details
Approximate surface level 400 feet above sea (Ordnance datum)


 

 

 
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|
| Geology encountered |
Thickness |
|
Depth |
| |
ft. |
in. |
|
ft. |
in. |
| Outset |
12 |
0 |
|
12 |
0 |
| Soil and gravel |
12 |
0 |
|
24 |
0 |
| Limestone |
114 |
0 |
|
138 |
0 |
| Yellow post |
48 |
0 |
|
186 |
0 |
| Grey post |
2 |
0 |
|
188 |
0 |
| COAL |
2 |
4 |
|
190 |
4 |
| Seggar |
1 |
6 |
|
191 |
10 |
| Blue metal |
36 |
0 |
|
227 |
10 |
| Supposed top and bottom Busty Seams |
0 |
0 |
|
227 |
10 |
| COAL |
3 |
3 |
|
236 |
4 |
| Seggar |
2 |
0 |
|
236 |
4 |
| COAL |
3 |
3 |
|
236 |
4 |
| Sinking:— |
0 |
0 |
|
236 |
4 |
| Seggar-clay |
2 |
0 |
|
238 |
4 |
| Light brown post |
52 |
0 |
|
290 |
4 |
| COAL |
0 |
3 |
|
290 |
7 |
| White post |
12 |
0 |
|
302 |
7 |
| COAL |
0 |
6 |
|
303 |
1 |
| Fire-clay |
4 |
0 |
|
307 |
1 |
| Blue metal |
3 |
4 |
|
310 |
5 |
| COAL |
0 |
8 |
|
311 |
1 |
| Coarse fire-clay |
3 |
0 |
|
314 |
1 |
| Post girdle |
1 |
0 |
|
315 |
1 |
| Blue metal |
20 |
0 |
|
335 |
1 |
| Very strong white post |
31 |
2 |
|
366 |
4 |
| Grey post, with partings |
13 |
6 |
|
379 |
10 |
| Blue metal, with girdles |
4 |
0 |
|
383 |
10 |
| COAL - Brockwell Seam |
5 |
6 |
|
389 |
4 |
| Bored further:— |
0 |
0 |
|
389 |
4 |
| Seggar-clay |
4 |
0 |
|
393 |
4 |
| Grey post |
3 |
5 |
|
396 |
9 |
| Hard white post, with water |
5 |
6 |
|
402 |
3 |
| Blue metal |
8 |
6 |
|
410 |
9 |
| Grey metal |
19 |
8 |
|
430 |
5 |
| Grey and white post |
13 |
2 |
|
443 |
7 |
| Grey metal |
5 |
0 |
|
448 |
7 |
| Blue metal |
6 |
1 |
|
454 |
8 |
| Seggar-clay |
4 |
2 |
|
458 |
10 |
| Blue metal, with post and ironstone girdles |
4 |
1 |
|
462 |
11 |
| Grey metal |
16 |
10 |
|
479 |
9 |
| Blue and black shale |
0 |
9 |
|
480 |
6 |
| COAL |
0 |
3 |
|
480 |
9 |
| Grey sandstone |
1 |
3 |
|
482 |
0 |
| White post |
1 |
2 |
|
483 |
2 |
| Grey metal, with post girdles |
4 |
6 |
|
487 |
8 |
| Blue metal |
5 |
7 |
|
493 |
3 |
| White post |
0 |
6 |
|
493 |
9 |
| Blue metal |
0 |
10 |
|
494 |
7 |
| White post |
0 |
7 |
|
495 |
2 |
| Blue metal |
0 |
4 |
|
495 |
6 |
| Sandstone |
2 |
11 |
|
498 |
5 |
| Blue metal, with post girdles |
8 |
10 |
|
507 |
3 |
| Strong white post |
14 |
2 |
|
521 |
5 |
| Blue metal, with post girdles |
4 |
3 |
|
525 |
8 |
| Sandstone |
1 |
0 |
|
526 |
8 |
| Blue metal |
0 |
10 |
|
527 |
6 |
| White post |
1 |
11 |
|
529 |
5 |
| Grey post |
2 |
4 |
|
531 |
9 |
| Hard grey post |
1 |
1 |
|
532 |
11 |
| Blue whin |
0 |
10 |
|
533 |
9 |
| Grey post |
0 |
6 |
|
534 |
3 |
| White post |
3 |
4 |
|
537 |
7 |
| Blue metal |
0 |
4 |
|
537 |
11 |
| White post |
3 |
7 |
|
541 |
6 |
| Grey post |
2 |
2 |
|
543 |
8 |
| White post |
2 |
7 |
|
546 |
3 |
| Blue whin |
0 |
8 |
|
546 |
11 |
| White post |
3 |
4 |
|
550 |
3 |
| Blue metal |
0 |
2 |
|
550 |
5 |
| White post |
0 |
4 |
|
550 |
9 |
| Blue metal |
0 |
2 |
|
550 |
11 |
| White post |
0 |
8 |
|
551 |
7 |
| Grey metal |
5 |
4 |
|
556 |
11 |
| Black shale |
0 |
2 |
|
557 |
1 |
| Grey metal |
4 |
4 |
|
561 |
5 |
| Blue metal |
1 |
10 |
|
563 |
3 |
| COAL |
0 |
7 |
|
563 |
10 |
| COAL |
0 |
2 |
|
563 |
10 |
| Stone band |
0 |
0¾ |
|
563 |
10 |
| COAL |
0 |
4¼ |
|
563 |
10 |
| White post |
0 |
4 |
|
564 |
2 |
| Grey metal |
1 |
2 |
|
565 |
4 |
| COAL |
0 |
3 |
|
565 |
7 |
| Blue metal |
1 |
1 |
|
566 |
8 |
| White post |
0 |
10 |
|
567 |
6 |
| Blue metal, with post panels |
0 |
7 |
|
568 |
1 |
| White post |
0 |
3 |
|
568 |
4 |
| Blue metal |
0 |
5 |
|
568 |
9 |
| White post |
17 |
8 |
|
586 |
5 |
| Blue metal |
1 |
0 |
|
587 |
5 |
| White post |
1 |
4 |
|
588 |
9 |
| White post, mixed with whin |
1 |
5 |
|
590 |
2 |
|
Source: An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume L-R, published by the North of England Institute of Mining & Mechanical Engineers, 1887
original entry for sinking/boring number 1357 in "An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume L-R, published by the North of England Institute of Mining & Mechanical Engineers, 1887"
original entry for sinking/boring number 2852 in "An Account of the strata of Northumberland & Durham as proved by Borings & Sinkings, Volume L-R, published by the North of England Institute of Mining & Mechanical Engineers, 1887"
main page for Middridge Colliery