The following tables present information about industry segments and geographic areas for the three and six months ended June 30, 2017 and 2016 (in thousands):



	For the three months ended June 30,
	2017			2016
Revenues from unrelated entities:
United States electrical construction and facilities services	$	449,222		$	420,632
United States mechanical construction and facilities services	741,817			625,547
United States building services	438,264			463,145
United States industrial services	187,476			333,508
Total United States operations	1,816,779			1,842,832
United Kingdom building services	79,158			90,584
Total worldwide operations	$	1,895,937		$	1,933,416

Total revenues:
United States electrical construction and facilities services	$	451,124		$	430,101
United States mechanical construction and facilities services	750,442			628,770
United States building services	453,849			476,458
United States industrial services	187,610			333,752
Less intersegment revenues	(26,246		)	(26,249		)
Total United States operations	1,816,779			1,842,832
United Kingdom building services	79,158			90,584
Total worldwide operations	$	1,895,937		$	1,933,416

NOTE 13 Segment Information - (Continued)



	For the six months ended June 30,
	2017			2016
Revenues from unrelated entities:
United States electrical construction and facilities services	$	892,238		$	768,921
United States mechanical construction and facilities services	1,412,946			1,233,975
United States building services	878,294			906,258
United States industrial services	446,015			591,012
Total United States operations	3,629,493			3,500,166
United Kingdom building services	158,176			178,220
Total worldwide operations	$	3,787,669		$	3,678,386

Total revenues:
United States electrical construction and facilities services	$	895,140		$	784,205
United States mechanical construction and facilities services	1,429,833			1,240,540
United States building services	908,793			932,255
United States industrial services	446,515			591,622
Less intersegment revenues	(50,788		)	(48,456		)
Total United States operations	3,629,493			3,500,166
United Kingdom building services	158,176			178,220
Total worldwide operations	$	3,787,669		$	3,678,386



	For the three months ended June 30,
	2017			2016
Operating income (loss):
United States electrical construction and facilities services	$	32,118		$	23,011
United States mechanical construction and facilities services	53,054			37,936
United States building services	20,185			18,535
United States industrial services	4,373			33,148
Total United States operations	109,730			112,630
United Kingdom building services	3,497			3,258
Corporate administration	(20,063		)	(22,958		)
Restructuring expenses	(343		)	(641		)
Total worldwide operations	92,821			92,289
Other corporate items:
Interest expense	(3,069		)	(3,118		)
Interest income	73			192
Income from continuing operations before income taxes	$	89,825		$	89,363

NOTE 13 Segment Information - (Continued)



	For the six months ended June 30,
	2017			2016
Operating income (loss):
United States electrical construction and facilities services	$	63,152		$	39,718
United States mechanical construction and facilities services	93,487			61,717
United States building services	34,394			32,533
United States industrial services	21,417			52,014
Total United States operations	212,450			185,982
United Kingdom building services	5,176			6,569
Corporate administration	(41,123		)	(43,915		)
Restructuring expenses	(908		)	(732		)
Total worldwide operations	175,595			147,904
Other corporate items:
Interest expense	(6,140		)	(5,494		)
Interest income	330			357
Income from continuing operations before income taxes	$	169,785		$	142,767



	June 30, 2017		December 31, 2016
Total assets:
United States electrical construction and facilities services	$	588,331	$	631,581
United States mechanical construction and facilities services	1,038,760		954,633
United States building services	784,941		753,434
United States industrial services	832,988		850,434
Total United States operations	3,245,020		3,190,082
United Kingdom building services	112,777		105,081
Corporate administration	489,777		557,275
Total worldwide operations	$	3,847,574	$	3,852,438