Browse Subjects

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Tamarack Mill

Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Manpower, Labor, Skilled Labor, Manufacturing Process, Mills and Millwork Tamarack Mill Stack [Photo showing six men on top of the stack]

Scanned: May 2, 2006


Tamarack Mill

Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Manpower, Labor, Skilled Labor, Manufacturing Process, Mills and Millwork Tamarack Mill Stack [Similar photo to MTU Neg 00140a]

Scanned: May 2, 2006


Mills - Tamarack

Manufacturing Process, Mills and Millwork, Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Manpower, Labor, Skilled Labor Interior of the Tamarack Mill [Group of men lounge on barrels inside the mill]

Scanned: July 19, 2006


Lumber Mills

Manufacturing Process, Mills and Millwork, Saw Mills, Manpower, Labor, Skilled Labor, Forest Products Industry, Lumbering, Logging, Log Transportation Sturgeon Lumber Company Mill, Chassell [The mill in operation.]

Scanned: August 22, 2006


Mills

Manufacturing Process, Mills and Millwork, Manpower, Labor, Skilled Labor, Buildings Dollar Bay rolling mill. [Image of a brick building. Workers stand in the doorways. A man in a horse driven carriage can be seen to the left of the photo.]

Scanned: September 7, 2006


Mills

Metal Trade, Copper Industry and Trade, Manufacturing Process, Mills and Millwork, Manpower, Labor, Skilled Labor Tamarack Mill [Good image of the building. Men stand on top of railroad cars behind the building.]

Scanned: September 28, 2006


Lumbering

Manufacturing Process, Mills and Millwork, Saw Mills, Manpower, Labor, Skilled Labor, Buildings Ontonagon Lumber & Cedar Co. Mill [View of the mill. Workers and horses stand on a platform structure.]

Scanned: October 26, 2006


Mills

Manufacturing Process, Mills and Millwork, Buildings, Manpower, Labor, Skilled Labor Champion Mill on Copper Range R. R. [Two workers man the pump.]

Scanned: October 31, 2006


Calumet & Hecla - Wolverine Tube Division

Metal Trade, Copper Industry and Trade, Manufacturing Process, Manpower, Labor, Skilled Labor Pouring Copper. One of the oil fired furnaces used in the casting of round copper billets. Rigorous control of the temperature of the molten metal is necessary to insure a billet which is sound and free from porosity. The metal is being poured therough a cone known as a runner box, which is guided into place over the center of the mold by the operator at the lower left. The furnace operator at the right is handling a control which tilts the furnace and permits the metal to run into the vertical mold.

Scanned: September 28, 2009


Calumet & Hecla - Wolverine Tube Division

Metal Trade, Copper Industry and Trade, Manufacturing Process, Manpower, Labor, Skilled Labor This process shows pouring a series of nine round billets. The man on the right is watching the flow of molten metal through colored goggles and holds a rod in his hand which is used to "feel" the metal as it rises in the mold so he can signal the other operator to bring the furnace back to its melting position and shut off the flow. Previous to casting, phosphorus is added to the molten mass in the furnace to combine with any free oxygen, thus deoxidizing the metal. The furnace charge is then covered with charcoal to protect the metal against further oxidation. Prior to pouring molten metal into a mold, the surface of the mold is coated with a specially developed mold dressing.

Scanned: September 28, 2009