Quarries - Economics, Methods, Stone Types, Equipment and ...
Glossary of Scientific and Quarry Terms, from The Granites of Maine, Bulletin 313, 1907, by T. Nelson Dale, United States Geological Survey. Glossary of Slate Quarry Terms, C. F. Derven, Poultney, November 22, 1938. A Glossary of Some Slate Industry Terms, The Slate Industry of North and Mid Wales, by Dave Sallery