File:P000095.jpg

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Revision as of 14:00, 12 April 2015 by Scotfot (talk | contribs) (Locharbriggs Quarry. Dumfriesshire. A close-up showing the 'shot-grove' and chisel wedge method of splitting stone. Widely spaced holes are drilled and filled with black powder; once blown and the blocks dislodged, chisel wedges are driven in along pla...)
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P000095.jpg(800 × 573 pixels, file size: 173 KB, MIME type: image/jpeg)

Summary

Locharbriggs Quarry. Dumfriesshire. A close-up showing the 'shot-grove' and chisel wedge method of splitting stone. Widely spaced holes are drilled and filled with black powder; once blown and the blocks dislodged, chisel wedges are driven in along planes of weakness (usually bedding planes) to further work the stone. Note the quarryman wielding the large crowbar. The Locharbriggs Sandstone Formation is of Permian age.

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File history

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Date/TimeThumbnailDimensionsUserComment
current14:00, 12 April 2015Thumbnail for version as of 14:00, 12 April 2015800 × 573 (173 KB)Scotfot (talk | contribs)Locharbriggs Quarry. Dumfriesshire. A close-up showing the 'shot-grove' and chisel wedge method of splitting stone. Widely spaced holes are drilled and filled with black powder; once blown and the blocks dislodged, chisel wedges are driven in along pla...

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