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Isometric sketch of Calumet conglomerate lode [Image #:Book TN443M5V5-002 Figure 1]

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Isometric sketch of Calumet conglomerate lode  (600 x 600 DPI) | Add to Storage Bin

 

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Anonymous2/19/2009 10:07:29 AMThe Calumet Conglomerate Lode plunged almost 6000 feet beneath the surface along an outcropping that extended almost two miles long. By the time this sketch was drawn, this rich lode produced more than 40% of the native copper mined from the entire district (Dorr, Geology of Michigan, 1970).


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Bibliographic Information



Title: Isometric sketch of Calumet conglomerate lode
Photographer: Unknown
Date: October 1931
Description: Isometric sketch of Calumet conglomerate lode [Sketch map showing underground workings on the Calumet conglomerate ore body. Sketch shows locations of vertical and incline shafts.]
Source of Description: [cataloger]
Subject(s):


 
Metal Trade - Copper Industry and Trade - Copper Mines and Mining
Engineering - Surveying
Number of Pieces: One Piece(s)
Medium: photographic print;
Color: Color;
Size: 17.0 cm x 20.0 cm
Polarity: ; Positive.
Contents Note:
Local Note(s):

 
Sketch was published as Figure 1 in the October 1931 publication U.S. Bureau of Mines Information Circular 6526, entitled "Deep Mining Methods, Conglomerate Mine of the Calumet & Hecla Consolidated Mining Company" by Harry Vivian. This title is cataloge
Donor:
Institution: MTU Archives
Collection: Book Collection
Collection #:
Image #: Book TN443M5V5-002 Figure 1
Condition: Good