![](https://cchi.mtu.edu/system/files/styles/archives_watermark_thumbnail/private/2300a5b0-a299-4a07-80ea-e46d254cf4e2?itok=q-SgEMYP)
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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![](https://cchi.mtu.edu/system/files/styles/archives_watermark_thumbnail/private/6f21d997-d84f-482b-b611-b9c59e7aae90?itok=Db31FafH)
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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![](https://cchi.mtu.edu/system/files/styles/archives_watermark_thumbnail/private/9922b843-784d-407f-9d1b-657a4a30b9a6?itok=5sM31Qox)
Apron Dumping |
Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Buildings, Manners and Customs, Clothing and Dress |
Calumet # 16 Osceola Lode, A man oversees Apron Dumping in the rockhouse.
Scanned: October 26, 2007 |
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![](https://cchi.mtu.edu/system/files/styles/archives_watermark_thumbnail/private/45965ef3-a183-4d70-91a2-8463f9c86312?itok=o5LU2r1B)
Calumet & Hecla Stamp Mills |
Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Buildings, Manufacturing Process, Mills and Millwork |
Calumet & Hecla stamp mills, boilers, automatic stokers. [Image looks down a runway between two banks of machinery in a C&H stamp mill.]
Scanned: September 10, 2014 |
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![](https://cchi.mtu.edu/system/files/styles/archives_watermark_thumbnail/private/8d18ddf1-d7c7-472a-ae3e-a7694a45f22e?itok=r0jImuna)
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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![](https://cchi.mtu.edu/system/files/styles/archives_watermark_thumbnail/private/2dc57ce4-c3f1-4081-8366-0c26906194ac?itok=3kMQI0Je)
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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![](https://cchi.mtu.edu/system/files/styles/archives_watermark_thumbnail/private/61a054c1-f85a-4b1b-a58d-521e82e31591?itok=yk1oofkI)
Stamp Mills - Ahmeek |
Manufacturing Process, Mills and Millwork, Metal Trade, Copper Industry and Trade, Copper Mines and Mining, |
Ahmeek Mills, Feeders Floor [Interior view of the mill feeders floor]
Scanned: November 28, 2007 |
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![](https://cchi.mtu.edu/system/files/styles/archives_watermark_thumbnail/private/23c3c7b7-25a4-4b36-9673-c8c517a1c7bf?itok=AmXE6fVq)
Stamp Mills - Ahmeek |
Manufacturing Process, Mills and Millwork, Metal Trade, Copper Industry and Trade, Copper Mines and Mining, |
Ahmeek Mills, Pumping Plant [Interior view of the machinery located in the pumping plant area.]
Scanned: November 28, 2007 |
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![](https://cchi.mtu.edu/system/files/styles/archives_watermark_thumbnail/private/818a46e0-cde6-41bb-a389-649f09c622bb?itok=8ounEtSe)
Calumet & Hecla Smelter |
Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Manpower, Labor, Skilled Labor, Smelting |
Calumet & Hecla Smelter Electric Crane [Several men work with the crane]
Scanned: December 12, 2006 |
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![](https://cchi.mtu.edu/system/files/styles/archives_watermark_thumbnail/private/6ad7c567-eb14-49c2-9ec1-60441a0a6039?itok=osyXKrDg)
Calumet & Hecla Smelter |
Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Buildings, Smelting |
Calumet & Hecla Smelter Casting Building [Interior view of the casting building]
Scanned: December 12, 2006 |
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