Durham Mining Museum - Pittington Colliery Shaft Details (original) (raw)

Londonderry Pit

Account of Strata sunk through in the Londonderry Pit, North Pittington Colliery. Began April 3rd, 1826, ended June 19th, 1828

Shaft Details

Sunk: 03 Apr 1826

Approximate surface level 325 feet above sea (Ordnance datum)

Switch to measurements in: fathoms, feet & inches, or metres

				Geology encountered Thickness Depth ft. in. ft. in. Outset 19 8 19 8 Soil 1 0 20 8 Gravelly clay 29 0 49 8 Blue metal (delivery drift in this, 8 ft. 2½ in. of offtake) 22 6 72 2 COAL 1 8 73 10 Grey metal 4 10 78 8 Jointy white post, with water 1 7 80 3 Grey metal 1 5 81 8 Jointy white post 1 2 82 10 Grey metal 2 5 85 3 COAL, foul 1 0 86 3 Soft black thill 0 7 86 10 Soft grey metal 8 0 94 10 Soft blue metal 12 7 107 5 COAL 0 3 107 8 Grey thill 1 5 109 1 Strong grey metal 9 0 118 1 Strong grey metal, with white post girdles 3 10 121 11 Freestone (a drift set in about half-way in this freestone, Sept. 7th, 1826) 40 0 161 11 Whin 4 8 166 7 White post and iron balls 10 1 176 8 Grey metal 0 6 177 2 Whin 1 8 178 10 White post 2 3 181 1 Grey metal 4 2 185 3 COAL, splint (Oct. 27th, 1826, drift set in) 2 3 187 7 Grey metal 24 0 211 7 Black stone and coal 2 0 213 7 Grey metal 10 7 224 2 Soft black stone 5 3 229 5 COAL - Three-Quarter Seam 5 1 234 6 COAL 1 9½ Black stone 0 9 COAL 1 5 Black stone 0 8 COAL 0 5½ Black thill stone 3 5 238 0 Strong blue metal 16 5 254 5 Black stone, with coal pipes 1 4 255 9 COAL - Five-Quarter Seam 3 9 259 6 COAL, splint 0 3½ COAL, good 3 3½ COAL, splint 0 2½ Black thill stone 2 8 262 2 Grey metal 25 6 287 8 Soft grey metal, with iron balls 5 7 293 3 Black stone 1 9 295 0 Grey thill stone 2 8 297 8 Black stone 2 9 300 5 COAL - Main Coal Seam 4 5 304 10 Grey thill stone 4 2 309 0 White post girdles 0 7 309 7 Strong grey metal 14 0 323 7 Blue metal 5 5 329 0 Black stone, with water 0 11 330 0 Grey metal, with post girdles and water 4 3 334 3 Blue metal 2 7 336 10 Strong grey metal 22 7 359 5 COAL - Maudlin Seam 6 3 365 8 Black stone (drift set in, Dec. 4th, 1827) 6 3 Grey metal, with post girdles and water 2 2 367 10 Strong white post 18 4 386 2 Black parting, with water 0 3 386 5 Strong white post 27 6 413 11 Black stone 9 5 423 4 Strong white post 9 8 433 0 Grey metal, with post girdles and water 1 2 434 2 Strong white post 2 6 436 8 Black stone, with water 0 10 437 6 Strong white post 5 11 443 6 Strong white post 16 1 459 7 Soft blue stone 2 2 461 9 COAL - Low Main Seam 4 0 465 9 COAL, coarse 3 6½ Black stone 0 2½ COAL, splint 0 3½ Grey metal thill 1 0 466 9 Strong grey metal, with post girdles 15 8 482 5 Soft blue metal 15 0 497 5 COAL, splint 1 5 498 10 Soft blue metal, with post girdles 11 9 510 7 COAL - Brass Thill Seam 2 5 513 0 COAL, high 0 7 Soft blue metal 1 2 COAL, low part 0 8 Strong grey thill 3 0 516 0 Strong white post 9 0 525 0 Strong grey metal, with post girdles 27 0 552 0 COAL - Hutton Seam 5 10 557 10 COAL, good 4 7 COAL, bottom 1 3 Sunk for sump 43 0 600 10

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 1539 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"

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