Title: Calumet & Hecla - Wolverine Tube Division
Photographer: Unknown
Subject Headings: Metal Trade - Copper Industry and Trade, Manufacturing Process, Manpower - Labor - Skilled Labor
Condition: Good
Description: 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.
Source of Description: Pictorial Description
Institution: Michigan Technological University Archives and Copper Country Historical Collections
Donor: Universal Oil Products
Date of Photo: undated
Medium: still image
Color: black and white
Size: 20.2 cm x 24.9 cm
Polarity: Positive
Image No: MS003-003-002-06
Collection Name: Calumet and Hecla Photograph Collection
Terms of Use: Rights to reproduce and distribute this image may be restricted. Contact the Michigan Technological University Archives and Copper Country Historical Collections for further information.
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