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Michigan Mining School - Class of 1888, first graduating class |
Education, Postsecondary Education, Education, Higher, Engineering, Metal Trade |
Michigan Mining School - Class of 1888 [First graduating class of institution later known as Michigan Technological University. Back row (left to right): James Benjamin Seager, John Luther Harris, Reginald Chapple Pryor, Edward Joseph Longyear. Front row (left to right): William John Uren, Samuel Alexander Parnall, William Edward Parnell.] Scanned: March 16, 2006 |
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Experimental Radio Station |
Engineering, Historic Sites, Historic Mines, Metal Trade, Copper Industry and Trade |
Amateur Radio Station WSYX. [Image shows old radio station equipment in a small room.] Scanned: June 13, 2013 |
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Calumet and Hecla Mills and Reclamation Plant - Ahmeek Mill Gravity Flow Sheet |
Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Engineering, |
Ahmeek Mill - Gravity Flow Sheet [A line drawing which diagrams the process, equipment and flow of rock through the Ahmeek Mill.] Scanned: January 11, 2006 |
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Calumet and Hecla Mills and Reclamation Plant - Calumet Conglomerate Flow Sheet |
Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Engineering, |
Calumet Conglomerate Flow Sheet [A line drawing which diagrams the process, equipment and flow of rock through the Calumet mill and reclamation plant in Lake Linden.] Scanned: January 11, 2006 |
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Calumet and Hecla Mills and Reclamation Plant - Flotation Flow Sheet of Calumet and Hecla Conglomerate |
Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Engineering, |
Flotation Flow Sheet of Calumet and Hecla Conglomerate [A line drawing which diagrams the process, equipment and flow of rock through the Calumet mill and reclamation plant in Lake Linden.] Scanned: January 13, 2006 |
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Calumet and Hecla Mills and Reclamation Plant - Gravity Flow Sheet of Calumet and Hecla Reclamation Plant |
Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Engineering, |
Gravity Flow Sheet of Calumet and Hecla Reclamation Plant [A line drawing which diagrams the process, equipment and flow of rock through the Calumet mill and reclamation plant in Lake Linden.] Scanned: January 13, 2006 |
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Calumet and Hecla Mills and Reclamation Plant - Sands Model |
Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Engineering, |
Reclamation Sands [An interior of an office space showing a large model made of dowels inserted vertically into pegboard. The dowels are painted dark and light colors.] Scanned: July 3, 2006 |
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Calumet & Hecla Stamp Mill |
Engineering, Natural Resources, Mines and Mineral Resources, Copper Mines and Mining, Metal Trade, Copper Industry and Trade |
Calumet & Hecla Stamp Mills. Hecla Mill, Wash Room. Scanned: September 10, 2014 |
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Calumet & Hecla Stamp Mill |
Engineering, Natural Resources, Mines and Mineral Resources, Copper Mines and Mining, Metal Trade, Copper Industry and Trade |
Calumet & Hecla Stamp Mills, sand leaching plant. Scanned: September 10, 2014 |
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Calumet & Hecla Stamp Mill |
Engineering, Natural Resources, Mines and Mineral Resources, Copper Mines and Mining, Metal Trade, Copper Industry and Trade |
View of part of the Calumet & Hecla Stamps from Torch Lake, Hecla Sand Wheel House, W.W. Boiler House, Water Works, Hecla Mill, Co's Dock and Steamboat L'd'g. Scanned: September 10, 2014 |