Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 455
h the sluices, and thedump must be extensive enough to receive the accumulations not only of a month or year, but ofseveral years. In the workings of every department economy is absolutely essential to success, asthe amount of gold collected per cubic yard of material moved is very trifling, and… … MINING, HYDRAULIC. 435 of modern times have been made by corporations calling themselves ditch companies, who erectdams to hold the water in reservoirs, open canals, build flumes, and use the water upon claims oftheir own and sell their surplus to other companies at so much per miners inch.…
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