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Search keyword:(Subject: #Superior Lake)
Results:3items
Combination in the mining industry; a study of concentration in Lake Superior iron ore production
60. - {1st AMS ed.}. - New York : AMS Press , {1968}
Books
A few remarks on the operations of the companies : at present organized, for the digging & smelting of copper and other ores, on Lake Superior and the Saint Croix River / by an explorer
[United States? : s.n , 1845?]
E-Book
A true description of the Lake Superior country : its rivers, coasts, bays, harbours, islands, and commerce : with Bayfield's chart, <showing the boundary line as established by Joint commission> : also a minute account of the copper mines and working companies : accompanied by a map of the mineral regions : showing, by their no. and place, all the different locations : and containing a concise mode of assaying, treating, smelting, and refining copper ores / by John R. St. John
New York : W.H. Graham , 1846