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The floors

Manufacturing Process, Mills and Millwork, Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Buildings [Early sketch of stamp mill in Keweenaw County. Several men are shown working in a large room. Trenches in the floor are used to separate copper from waste rock. Building appears to be open at the back. Although this illustration does not carry an attribution, it is likely done by Benson John Lossing and William Barritt, active illustrators of the late Nineteenth Century who are credited with the other illustrations in this publication.]

Scanned: November 17, 2006


Lake Superior Iron Mines - Cleveland Mine

Metal Trade, Iron Industry and Trade, Iron Mines and Mining, Manufacturing Process, Mills and Millwork, Saw Mills, Buildings Cleveland Mine - Timber Mill [Interior view of the mill showing several large logs along with two large circular saws.]

Scanned: May 26, 2009


Calumet & Hecla Stamp Mill

Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Manufacturing Process, Mills and Millwork, Buildings Calumet & Hecla Stamp Mill at shaft #4 [Stamp mill with Shaft #4 in the right side of the photograph]

Scanned: October 16, 2007