Pontop Colliery
Harelaw Pit
Section of Strata sunk through in the Harelaw Pit, Pontop Colliery. November 23rd, 1839
Shaft Details
Sunk: 23 Nov 1839
Approximate surface level 834 feet above sea (Ordnance datum)
Switch to measurements in:
fathoms, feet & inches, or metres
 
|
|
|
|
| Geology encountered |
Thickness |
|
Depth |
| |
ft. |
in. |
|
ft. |
in. |
| Old heap |
12 |
0 |
|
12 |
0 |
| Clay |
4 |
6 |
|
16 |
6 |
| Freestone |
11 |
4 |
|
27 |
10 |
| Light blue metal |
22 |
4 |
|
50 |
2 |
| COAL |
0 |
4 |
|
50 |
6 |
| Thill |
0 |
6 |
|
51 |
0 |
| Blue metal |
5 |
4 |
|
56 |
4 |
| COAL |
0 |
4 |
|
56 |
8 |
| Thill |
1 |
0 |
|
57 |
8 |
| Blue metal |
6 |
7 |
|
64 |
3 |
| White post |
4 |
3 |
|
68 |
6 |
| Blue metal |
18 |
0 |
|
86 |
6 |
| COAL |
0 |
4 |
|
86 |
10 |
| Thill |
1 |
6 |
|
88 |
4 |
| Grey metal |
2 |
10 |
|
91 |
2 |
| White post |
60 |
4 |
|
151 |
6 |
| COAL - Shield Row Seam |
5 |
6 |
|
157 |
1 |
| COAL |
2 |
6 |
|
|
|
| Band |
0 |
0½ |
|
|
|
| COAL |
1 |
0 |
|
|
|
| Band |
1 |
0 |
|
|
|
| COAL, bottom |
1 |
0 |
|
|
|
| Thill |
1 |
0 |
|
158 |
1 |
| Blue metal |
10 |
6 |
|
168 |
7 |
| Black metal |
1 |
3 |
|
169 |
10 |
| Blue metal |
0 |
8 |
|
170 |
6 |
| Jet, or black metal |
0 |
3 |
|
170 |
9 |
| COAL |
0 |
4 |
|
171 |
2 |
| Thill |
3 |
0 |
|
174 |
2 |
| Grey metal and whin girdles |
59 |
2 |
|
233 |
4 |
| Black metal |
3 |
0 |
|
236 |
4 |
| Blue metal |
1 |
10 |
|
238 |
2 |
| COAL |
1 |
2 |
|
239 |
4 |
| Blue metal |
2 |
0 |
|
241 |
4 |
| COAL - Five-Quarter or Splint Coal Seam |
6 |
2 |
|
247 |
6 |
| COAL |
0 |
7 |
|
|
|
| Jet |
0 |
3 |
|
|
|
| COAL |
3 |
2 |
|
|
|
| COAL, splint |
0 |
8 |
|
|
|
| COAL |
1 |
6 |
|
|
|
| Thill |
1 |
2 |
|
248 |
8 |
| COAL - Brass Thill Seam |
4 |
10 |
|
253 |
6 |
| Thill |
6 |
0 |
|
259 |
6 |
| Brown post |
24 |
3 |
|
283 |
9 |
| Blue metal, with ironstone girdles |
37 |
6 |
|
321 |
3 |
| Blue metal, with post girdles |
22 |
0 |
|
343 |
3 |
| White post |
34 |
10 |
|
378 |
1 |
| Brown post |
40 |
0 |
|
418 |
1 |
| Grey metal |
7 |
6 |
|
425 |
7 |
| COAL - Hutton Seam |
5 |
9 |
|
431 |
4 |
| COAL |
2 |
6 |
|
|
|
| Band |
0 |
3 |
|
|
|
| COAL |
3 |
0 |
|
|
|
|
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 1559 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 Pontop Colliery
