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Our Health, Safety, and Environment (HSE) Programs are primary objectives of the Great Lakes Wellhead inc. business.

Every employee of Great Lakes Wellhead inc. takes responsibility for our HSE program.

HSE Manager: Tyler Henfling

We begin each day, start every meeting, design every product and review every job for its HSE impact to our employees, our customers, and our world. We are proud and active members of the following industry-leading networks:


At Great Lakes Wellhead, Inc., as a privately owned enterprise, our success and growth is a result of proven safety record and a culture of teamwork and selflessness.  We strive to treat everyone equally and give no preferential treatment to any one’s age, race, ethnicity, religion, gender, marital status, political affiliation, economic status and any other unique attribute that makes our workforce diverse.    We recognize and appreciate diversity in our workforce and promote fairness, equity and inclusion in providing equal opportunity for employment, recognition and advancement.

The responsibility for our Workforce diversity ultimately rests with the following (4) managing members of GLW:

  • President and General Manager – Mark Bonessi
  • VP Finance and Compliance – Melissa Guy
  • VP Sales and Operations – Kyle Fitzpatrick
  • VP Engineering – Eric Rosema




Corporate Headquarters

4243 M-37 South
Grawn, MI   49637

Phone: 1(888) 514-9100
Fax: (231) 943-3914

Accredited By:




PEC Safety