Annual report pursuant to Section 13 and 15(d)

MINERAL PROPERTIES IN THE UNITED STATES (Details)

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MINERAL PROPERTIES IN THE UNITED STATES (Details)
12 Months Ended
Dec. 31, 2017
a
Claim
T
Aug. 31, 2001
Claim
MINERAL PROPERTIES IN THE UNITED STATES [Abstract]    
Number of patented mining claims in which PEVM has undivided interest 48  
Number of unpatented mining claims in which PEVM has undivided interest 5  
Area under patented and unpatented mining claims | a 1,500  
Allocated mining capacity per day | T 300  
Unpatented claims abandoned   75
Period when the property is unused 35 years