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Houston (Headquarters)	3350 Yale Street Houston, Texas 77018 Phone (832) 328-1010 Fax (832) 328-1460 Toll free (866) 544-1487 htstexas@htseng.com
Austin	14101 Hwy 290W, Building 2000A Austin, Texas 78737 Phone (512) 894-3086 Fax (512) 894-0867 htstexas@htseng.com
Beaumont	3050 C Rusk Street Beaumont, Texas 77702 Phone (409) 833-7120 Fax (409) 833-1059 htstexas@htseng.com
Dallas/Fort Worth	1250 Post N Paddock St., Suite 300 Grand Prairie, Texas 75050 Phone (469) 263-1000 Fax (469) 263-1090 htstexas@htseng.com
San Antonio	102 W. Nakoma San Antonio, Texas 78216 Phone (210) 340-2533 Fax (210) 340-2575 Toll Free (800) 369-2533 htstexas@htseng.com

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Healthcare	Mike Donovan	miked@htseng.com
Higher Education / Laboratory	Mike Donovan Kimberly Thompson	miked@htseng.com kimberly@htseng.com
K-12	Joel Hill	joelh@htseng.com
Government / Public / Community College	Randy Barnett	randyb@htseng.com
Commercial	Darren Bentley	darrenb@htseng.com
Manufacturing / Industrial	Brennan Vierra	brennanv@htseng.com
Mission Critical / Technology	Brennan Vierra	brennanv@htseng.com