SILVER AND GOLD: AN ACCOUNT OF THE MINING AND METALLURGICAL INDUSTRY WITH REFERENCE CHIEFLY TO THE PRECIOUS METALS. BY ROSSITER W. RAYMOND, PH. D., COMMISSIONER OF MINING STATISTICS; PRESIDENT OF THE AMERICAN INSTITUTE OF MINING ENGINEERS; |
SILVER AND GOLD: AN ACCOUNT OF THE MINING AND METALLURGICAL INDUSTRY WITH REFERENCE CHIEFLY TO THE PRECIOUS METALS. BY ROSSITER W. RAYMOND, PH. D., COMMISSIONER OF MINING STATISTICS; PRESIDENT OF THE AMERICAN INSTITUTE OF MINING ENGINEERS; |