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THE PROCESSES OF CONCENTRATION, CH^j^fe^^^-ND EXTRACTION BY oj^"

THE ASSAYING, MELTING, AND REFINING OF GOLD /

M. EISSLER

MINING ENGINEER; A.J.M.R.; MEMBER OF THE INSTITUTE OF MINI' G AND METALLURGY

AUTHOR OF

"MODERN HIGH EXPLOSIVES/' "THE METALLURGY OF SILVER," ETC., ETC.

' FOURTH EDITION, ENjURGED JSKiti) afcout i£u)a=f)uirtrretr–anlr–8ftj}... (Información más detallada)