PROPERTY, PLANT, AND EQUIPMENT (Tables)

3 Months Ended

Mar. 31, 2013

Property, Plant and Equipment [Abstract]

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



	March 31,		December 31,
	2013		2012
Land	$	93,387	$	106,037
Asset retirement costs (non-landfill)	10,097		10,450
Landfill assets	82,580		77,952
Buildings and improvements	344,498		329,617
Camp equipment	132,900		135,827
Vehicles	392,113		385,172
Equipment	1,061,968		1,061,090
Furniture and fixtures	6,817		6,757
Construction in progress	79,589		31,780
	2,203,949		2,144,682
Less - accumulated depreciation and amortization	654,143		612,919
Total property, plant and equipment, net	$	1,549,806	$	1,531,763

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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