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17/03/2009 01:08:53
Digital Asset
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P number: P527784
Caption: Limestone from Clippens Lime Works, Straiton, Midlothian.
Description: Limestone from Clippens Lime Works, Straiton, Midlothian. The Burdiehouse Limestone was originally worked opencast in a series of quarries between Straiton and Burdiehouse Mains and also to the south of Pentland Mains. Later it was wrought in a pit at Clippens by the Shotts Iron Company Limited. British Geological Survey Petrology Collection sample number MC 7560. The seam dips south-eastwards at 30 degrees, and has a thickness of 27 feet. It is extracted in three leaves or benches; bottom leaf, 84 feet; middle leaf, 7 feet; top leaf, 114 feet. The top leaf is the purest of the three, but the superiority is exaggerated somewhat by the presence of bituminous matter in the two lower leaves. This imparts a dark colour to the limestone but does not impair its suitability for burning. The low silica and low total insoluble residue of all three beds are noteworthy. The stone is used for iron smelting, cement-making and lime-burning, and as ground limestone for agricultural use. Five kilns of the continuous-burning, open type, are in operation. There is also a grinding plant and a ground-lime plant. The lime is prepared in the ground-lime and small-lime forms and is marketed for agricultural, plaster and building purposes. Reserves of stone available by mining are plentiful.
Date taken: 25/06/1905
Photographer: Unknown
Copyright statement: Unknown
Orientation: Landscape
Size: 269.80 KB; 1000 x 665 pixels; 85 x 56 mm (print at 300 DPI); 265 x 176 mm (screen at 96 DPI);
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