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ASSET RETIREMENT OBLIGATIONS (Tables)
12 Months Ended
Jul. 31, 2017
Asset Retirement Obligation Disclosure [Abstract]  
Schedule of Change in Asset Retirement Obligation [Table Text Block]
The Company’s asset retirement obligations relate to future remediation and decommissioning activities at the Palangana Mine, Hobson Processing Facility and the Alto Parana Titanium Project pilot plant in Paraguay.
 
Balance, July 31, 2016
 
$
3,746,464
 
Accretion
 
 
224,873
 
Assumed from CIC Acquisition
 
 
102,950
 
Revision in estimate of asset retirement obligations
 
 
(344,385)
 
Balance, July 31, 2017
 
$
3,729,902
 
Schedule Of Estimated Cash flow and Assumption Used For ARO [Table Text Block]
The estimated amounts and timing of cash flows and assumptions used for the ARO estimates are as follows:
 
 
 
July 31, 2017
 
 
July 31, 2016
 
Undiscounted amount of estimated cash flows
 
$
7,098,581
 
 
$
6,650,255
 
 
 
 
 
 
 
 
 
 
Payable in years
 
 
5.0 to 17
 
 
 
4.1 to 15
 
Inflation rate
 
 
1.37% to 2.14%
 
 
 
1.15% to 2.25%
 
Discount rate
 
 
5.48% to 6.40%
 
 
 
5.02% to 8.00%
 
Schedule Of Undiscounted Amounts Of Estimated Cash Flows [Table Text Block]
The undiscounted amounts of estimated cash flows for the next five years and beyond are as follows:
  
Fiscal 2018
 
$
-
 
Fiscal 2019
 
 
-
 
Fiscal 2020
 
 
-
 
Fiscal 2021
 
 
-
 
Fiscal 2022
 
 
148,391
 
Remaining balance
 
 
6,950,190
 
 
 
$
7,098,581