International Standard Bible Encyclopedia
Quarries in Palestine are not usually very deep because there is plenty of good stone to be found at the surface. The quarryman seeks a thick stratum of firm limestone which has a favorable exposure. The vertical joint-planes divide the stratum into large blocks which the quarryman dislodges with the aid of crowbars. These great blocks he skillfully cleaves by inserting several wedges in a line in holes made by a pick, and driving the wedges in with a heavy hammer. In these days gunpowder is occasionally used, especially when there are not favorable joint-planes producing blocks capable of being moved by the crowbar.
Another method, which is employed where stones of great size are wanted, is to carve the stones out of the rock by cutting channels around them with the pick. In the limestone quarries of
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Orr, James, M.A., D.D. General Editor. Entry for 'Quarries'. International Standard Bible Encyclopedia. https://www.studylight.org/encyclopedias/eng/isb/q/quarries.html. 1915.