Property, Plant and Mine Development, net (Tables)

6 Months Ended

Jun. 30, 2020

Property, Plant and Mine Development, net

Schedule of property, plant and mine development

	2020		2019
	(in thousands)
Asset retirement costs	$	4,509	$	3,412
Construction-in-progress (1)		2,302		11,965
Furniture and office equipment		2,109		2,087
Leach pad and ponds		5,649		5,649
Land		242		242
Light vehicles and other mobile equipment		2,555		2,553
Machinery and equipment		44,207		43,364
Mill facilities and infrastructure		32,004		31,408
Mineral interests and mineral rights		18,878		18,228
Mine development (2)		105,221		90,089
Software and licenses		1,659		1,659
Subtotal (3) (4)		219,335		210,656
Accumulated depreciation and amortization		(97,577)		(85,397)
Total	$	121,758	$	125,259

(1) Includes Nevada construction-in-progress and pre-production stripping costs of $0.1 million and $9.6 million at June 30, 2020 and December 31, 2019, respectively. Mexico construction-in-progress was $2.2 million and $2.4 million at June 30, 2020 and December 31, 2019, respectively.

(2) Pearl Mine development of $13.3 million was put into service on April 1, 2020.

(3) Includes $1.8 million of assets recorded under finance leases. Please see Note 13 for additional information.

(4) Includes accrued capital expenditures of $0.7 million and $3.8 million at June 30, 2020 and December 31, 2019, respectively.