Midnight Test Mine

The 'Midnight Test Mine' file is part of the G. M. Colvocoresses mining collection. Colvocoresses was a mining engineer and metallurgist in Arizona. He was General Manager of Southwest Metals Company, Humboldt, AZ. It acquired Consolidated Arizona Smelting Company by the end of 1921. In 1920, Colvocoresses was appointed receiver for Consolidated Arizona Smelting Company out of Phoenix. This collection is comprised mainly of his reports on field visits or submittals from approximately 300 Arizona properties and 100 more properties in the Southwest.

 

Resource ID: 
1986-01-0190
Resource Type: 
Document: Text
Theme Keywords: 
maps and atlases
metallic ores
mineral resources
mineralogy
mining and quarrying
natural resource assessment
natural resource extraction
reports
Silver
Gold
Place Keywords: 
United States
Arizona
Yavapai County
Groom Creek - 7.5 Min
Patented Claims Ms 1535
T13N R1W Sec 30 SW
Prescott physiographic area
Groom Creek metallic mineral dist.
Yavapai1064B
Time Keywords: 
1930s
Start Date: 
1933-01-01
End Date: 
1938-12-31
Coordinates: 
Publication Date: 
2015-06-30
Contributor: 
Colvocoresses, George M., II
National Gold Corp.
Collection: 
G. M. Colvocoresses
Bibliographic Citation: 
Please cite by using: [a description of the item]. 1986-01-0190, G. M. Colvocoresses mining collection, Arizona Geological Survey.
Contact Phone: 
602-771-1601