Nature of Business (Tables)

9 Months Ended

Sep. 30, 2013

Nature of Business

Schedule of list of primary operating subsidiaries and their reportable operating segment

Subsidiary	Operating Segment
ARB, Inc. (“ARB”)	West Construction Services
ARB Structures, Inc.	West Construction Services
Q3 Contracting, Inc. (“Q3C”); acquired 2012	West Construction Services
Rockford Corporation (“Rockford”)	West Construction Services
Stellaris, LLC.	West Construction Services
OnQuest, Inc.	Engineering
OnQuest, Canada, ULC (Born Heaters Canada, ULC prior to 2013)	Engineering
Cardinal Contractors, Inc.	East Construction Services
Force Specialty Services, Inc. (“FSSI”); acquired 2013	East Construction Services
James Construction Group, LLC (“JCG”)	East Construction Services
Sprint Pipeline Services, L.P. (“Sprint”); acquired 2012	East Construction Services
Silva Group (“Silva”); acquired 2012	East Construction Services
The Saxon Group (“Saxon”); acquired 2012	East Construction Services