Browse Subjects

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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


Worcester Lumber Company

Natural Resources, Forests and Forestry, Manufacturing Process, Mills and Millwork, Saw Mills, Manpower, Labor Loading water to ice the road. [Three loggers load water barrels into a wooden sleigh.]

Scanned: April 6, 2011


Worcester Lumber Company

Manufacturing Process, Mills and Millwork, Saw Mills, Natural Resources, Forests and Forestry, Manpower, Labor Worcester Lumber Company Mill at Chassell, Mich. [View of the milling operations at this large facility.]

Scanned: April 6, 2011


Calumet & Hecla Smelter

Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Manufacturing Process, Manpower, Labor Inspecting copper cakes. [Two men are shown inspecting the cakes.]

Scanned: September 22, 2009


Calumet & Hecla - White Pine Mill

Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Manufacturing Process, Mills and Millwork, Manpower, Labor White Pine Mill Progress Photo - View of stamp mill looking N.E.

Scanned: September 24, 2009


Calumet & Hecla - White Pine Mill

Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Manufacturing Process, Mills and Millwork, Manpower, Labor White Pine Mill Progress Photo - View of Crushing Plant looking E.

Scanned: September 24, 2009


Calumet & Hecla - White Pine Mill

Metal Trade, Copper Industry and Trade, Copper Mines and Mining, Manpower, Labor, Manufacturing Process, Mills and Millwork White Pine Mill Progress Photo - White Pine Mill Boiler House

Scanned: September 25, 2009


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