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Costs Incurred (Tables)
3 Months Ended
Sep. 30, 2016
Mineral Industries Disclosures [Abstract]  
Costs to Acquire and Explore the Properties
Costs to acquire and explore our Tetlin Lease and other properties were as follows: 
 
 
Three Months Ended September 30,
 
 
2016
 
2015
Exploration costs, claim rentals, and minimum royalties
 
$

 
$
14,425

Total costs incurred
 
$

 
$
14,425