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: Hunt, Thomas Sterry, 1826-1892.; Douglas, James, 1837-1918.; Stewart, James Oscar.
Publisher: Press of A.A. Kingman
Published: 1876
Place of publication: Boston
Language: eng
Number of pages: 39
Subjects: Copper -- Metallurgy.