La Follette, Robert M. (Robert Marion), 1855-1925, ed, La Follette, Robert M. (Robert Marion), 1855-1925, Handy, William M, Higgins, Charles · Chicago : Making of America · leaf 246
lands. An act of congress was passed in 1893which requires debris or tailings of all mines operating inthe drainage basins of the Sacramento and San Joaquinrivers to be impounded behind dams or other restrainingworks. This restricts the output, as not nearly as muchgravel can be washed in a given… … WORLDS PRODUCTION OF SILVER
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