LEGACY OF INNOVATION SINCE 1957 Hemphill OUR HISTORY TOWERS Hemphill provides Build to Suit programs, leasing, design-build services and manufacturing for the wireless industry. Learn More LEASING Install your antennas on an existing tower or discuss a Build to Suit program with Hemphill. Learn More OIL & GAS Hemphill provides unmatched turnkey solutions for your wireless network needs. Coming Soon! SOLAR Hemphill Solar is a turnkey energy solutions provider. Learn More Hemphill create Oklahoma's premiere manufacturing incubator. learn more (918) 834-2200 1305 N Louisville Ave Tulsa, OK 74115 For E-Mails, Click Here.