PROPERTY, PLANT AND EQUIPMENT

3 Months Ended

Mar. 31, 2015

Property, Plant and Equipment [Abstract]

Property, plant and equipment consisted of the following (in thousands):



	March 31, 2015		December 31, 2014
Land	$	97,742	$	98,507
Asset retirement costs (non-landfill)	10,812		10,871
Landfill assets	116,889		110,984
Buildings and improvements	334,282		338,242
Camp equipment	163,434		180,575
Vehicles	468,862		471,615
Equipment	1,283,502		1,302,424
Furniture and fixtures	5,379		5,517
Construction in progress	53,086		45,605
	2,533,988		2,564,340
Less - accumulated depreciation and amortization	1,031,491		1,005,506
Total property, plant and equipment, net	$	1,502,497	$	1,558,834

Interest in the amount of $0.2 million and $22.0 thousand was capitalized to fixed assets during the three months ended March 31, 2015 and March 31, 2014, respectively. Depreciation expense, inclusive of landfill amortization was $57.4 million and $59.9 million for the three months ended March 31, 2015 and March 31, 2014, respectively.

- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

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