Mining process
United States Patent 3271962
US Patent References:
/0029056.html
- - 0029056

/0363419.html
- - 0363419

/0768774.html
- - 0768774

Method of mining
- - 1960932

Air conditioning
- - 1974244


Inventors:
Bowen, Dahms James
Edmonds, Byron P.
Publication Date:
09/13/1966
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Assignee:
PITTSBURGH PLATE GLASS CO
Primary Class:
405/130
Other Classes:
299/4, 405/266, 405/138
International Classes:
E21B43/28; E21D1/12; E21B43/00; E21D1/00
US Patent References:
2251916Water mining soluble materials
2302136Method and apparatus for producing gaseous and liquid carbon dioxide and dry ice
2796739Underground storage system
2932170Refrigerated underground storage system
3050290Method of recovering sodium values by solution mining of trona
Foreign References:
FR956062A
GB190408722A