Senior Leadership Team

Senior Leadership Team

Terry May 


Terry May founded the company in 1979 and has managed its growth from a one-man service operation to a nationwide provider of corrosion control solutions. He is a registered Professional Engineer, an accredited NACE Corrosion Specialist, and a certified NACE CP Instructor. He has served as the President of the NACE Foundation and the Chairman of the Board for Oklahoma Quality Foundation. He likes golfing, going to the lake, and spending time with his family.

Cary Hill


Cary Hill returns to MESA after a year and a half hiatus to support the dedicated men and women who are committed to providing the highest levels of quality, service and SAFETY in the industry. That commitment and dedication is rewarded with long-term customer relationships who place their trust in MESA as a partner in their efforts to protect people, property and the environment.
Cary also serves his home-state community as the Executive Director of the Oklahoma Quality Foundation, where he supports leaders of role model organizations to achieve extraordinary results using the Baldrige Framework for Performance Excellence as a performance-driven leadership system. 

Greg Thomas

Director, SAFETY

Greg joined MESA in 1985 as an assistant in our manufacturing facility; he’s since risen the ranks to become the Director of SAFETY.  Greg oversees SAFETY and Risk Management and is responsible for maintenance and implementation of effective practices, initiatives and procedures that support industry related SAFETY and compliance policies.  He has been highly involved in MESA’s ISO certification and multiple LEAN initiatives, and has served as an Examiner for the Oklahoma Quality Foundation.

Pat McDaris

Director, Material Operations

Since joining MESA in 1985, Pat has seen and done it all in the CP business. Pat is NACE CP-certified and has seen every part of the CP industry, from anode fabrication to survey execution. Pat has served as an Examiner for the Oklahoma Quality Award, and loves spending time with his kids. You can find him every Saturday on the links.

Mark Cadle

Director, Corrosion Solutions

Mark joined MESA in 2009. He has been in the CP industry for over 30 years and holds several NACE certifications. Throughout his career, one of Mark’s primary focuses has been the development of corrosion control techniques for above ground storage tanks. Mark lives in Ohio and enjoys spending time with his wife, Karen, and their daughters. Be sure to ask him all about VCI next time you see him – that’s one of his specialties!

Kevin Pastotnik

Director, Projects

Kevin joined MESA in 2010, and has been in the pipeline integrity and construction industry for over 16 years, serving as both an operator and contractor. Much of his career has been dedicated to pipeline regulatory assessments, remediation and field technique and technical development of industry personnel. Kevin lives in Michigan with his wife and two daughters and enjoys being on the water and mountain biking.

Jay Keldsen

Director, Business Development

Jay joined MESA in 2015, and has been overseeing sales & marketing activities in the CP industry for over 40 years. He has been active in AWWA & NACE, having given numerous technical presentations and participated on Standard Committees involving cased crossings, electrical isolation and AST’s. He is also a past Chairman of the AUSCS and Liberty Bell Corrosion courses. When not traveling for business, Jay enjoys spending his time in CO and OH with his wife, Lois, three grown children, 6 grandchildren and two dogs.