5417 Renwick Houston, Texas 77081 Phone: (713) 668-8880 Fax: (713) 668-8887 Sales: Danny Grant dgrant@hdgrant.com Sales Assistant: Maureen Flynn mflynn@hdgrant.com   Nerissa Hernandez nhernandez@hdgrant.com Engineering: Michael J. Langton, P.E. mlangton@hdgrant.com   Chad Wiginton cwiginton@hdgrant.com Sales: Shon Broussard sbroussard@hdgrant.com   Stephan Smith ssmith@hdgrant.com   John Gilbert jgilbert@hdgrant.com   Mike Pittman mpittman@hdgrant.com   Aaron Hirth ahirth@hdgrant.com   Stephen Humphrey shumphrey@hdgrant.com Inside Sales: Lynn Sammons lsammons@hdgrant.com   Stephen Taylor staylor@hdgrant.com Estimating: Deborah Schmiedel dschmiedel@hdgrant.com Accounting: Glenda Smith gsmith@hdgrant.com J'Lynn Helton jhelton@hdgrant.com Warehouse: Steven Spaulding sspalding@hdgrant.com