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PLANT AND EQUIPMENT AND MINERAL PROPERTIES
 3 Months Ended
Mar. 31, 2019
Property, Plant and Equipment [Abstract]  
Plant and Equipment and Mineral Properties
PLANT AND EQUIPMENT AND MINERAL PROPERTIES
The following is a summary of plant and equipment:
 
March 31, 2019
 
December 31, 2018
 
Cost
 
Accumulated
Depreciation
 
Net Book Value
 
Cost
 
Accumulated
Depreciation
 
Net Book
Value
Plant and equipment
 
 
 
 
 
 
 
 
 
 
 
Nichols Ranch
$
29,210

 
$
(12,533
)
 
$
16,677

 
$
29,210

 
$
(12,021
)
 
$
17,189

Alta Mesa
13,656

 
(2,552
)
 
11,104

 
13,656

 
(2,319
)
 
11,337

Equipment and other
13,444

 
(12,208
)
 
1,236

 
13,444

 
(12,127
)
 
1,317

Plant and equipment total
$
56,310

 
$
(27,293
)
 
$
29,017

 
$
56,310

 
$
(26,467
)
 
$
29,843



The following is a summary of mineral properties:
 
March 31, 2019
 
December 31, 2018
Mineral properties
 
 
 
Uranerz ISR properties
$
25,974

 
$
25,974

Sheep Mountain
34,183

 
34,183

Roca Honda
22,095

 
22,095

Other
1,287

 
1,287

Mineral properties total
$
83,539

 
$
83,539