| P number: | P000178 |
|---|---|
| Old photograph number: | C03882 |
| Caption: | Middleton Quarry and Mine, Gorebridge. Midlothian. Interior view of the mine illustrating the stoop and room (pillar-and-stall) method of extraction. A figure illustrates the scale. |
| Description: | Middleton Quarry and Mine, Gorebridge. Midlothian. Interior view of the mine illustrating the stoop and room (pillar-and-stall) method of extraction. A figure illustrates the scale. Mining the North Greens (No. 2) Limestone. The thickness of the seam is 50 ft. though only the lower 20 ft. is in massive beds and suitable for mining. Chemical analysis shows it is 94.09% calcium carbonate and is of uniform high quality. The limestone was burnt in vertical, continuous mixed-feed kilns to produce lime for both agriculture and building purposes. Ground limestone was also produced. The rocks are of the Lower Limestone Group of the Carboniferous period. The quarry is now disused. |
| Date taken: | Mon Jan 01 00:00:00 BST 1945 |
| Photographer: | Fisher, W.D. |
| Copyright statement: | Crown |
| Acknowledgment: | This image was digitized with grant-in-aid from SCRAN the Scottish Cultural Resources Access Network |
| X longitude/easting: | 335500 |
| Y latitude/northing: | 657500 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Landscape |
| Size: | 192.26 KB; 1000 x 719 pixels; 85 x 61 mm (print at 300 DPI); 265 x 190 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Best of BGS Images/ Images from the archives |
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