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Property, Plant and Mine Development, net (Tables)
 6 Months Ended
Jun. 30, 2018
Property, Plant and Mine Development, net  
Schedule of property, plant and mine development

 

    

2018

    

2017

 

 

(in thousands)

Asset retirement costs

 

$

969

 

$

1,079

Construction-in-progress (1)

 

 

17,844

 

 

10,838

Furniture and office equipment

 

 

1,711

 

 

1,664

Land

 

 

242

 

 

242

Light vehicles and other mobile equipment

 

 

2,244

 

 

2,211

Machinery and equipment

 

 

23,960

 

 

22,916

Mill facilities and infrastructure

 

 

10,817

 

 

10,075

Mineral interests and mineral rights

 

 

17,958

 

 

17,658

Mine development

 

 

63,760

 

 

56,957

Software and licenses

 

 

1,659

 

 

1,678

Subtotal (2) (3)

 

 

141,164

 

 

125,318

Accumulated depreciation and amortization

 

 

(50,040)

 

 

(42,719)

Total

 

$

91,124

 

$

82,599

(1)

Includes Isabella Pearl asset and development costs of $11.3 million and $7.4 million at June 30, 2018 and December 31, 2017, respectively.

(2)

Includes $1.6 million of assets recorded under capital leases at June 30, 2018 and December 31, 2017. Please see Note 12 for additional information.

(3)

Includes accrued capital expenditures of $2.0 and $1.0 million at June 30, 2018 and December 31, 2017, respectively.