The Hunt and Douglas process for extracting copper from its ores
Subtitle: with an appendix including notes on the treatment of silver and gold ores.
Contributors: Douglas, James, 1837-1918.
Series: CIHM/ICMH Microfiche series -- no. 07746
Publisher: A.A. Kingman
Published: 1980
Place of publication: Boston
Language: eng
Format: Microform
Number of pages: 26
Subjects: Copper -- Metallurgy.; Silver.
Notes: Filmed from a copy of the original publication held by the Library, Geological Survey of Canada. Ottawa : Canadian Institute for Historical Microreproductions, 1980.