Our Legacy

What started as hands-on grit has become an industry benchmark for safety and efficiency. We’ve built our reputation on reliability, reducing downtime and extending asset life across North America and beyond. Key Milestones:

1985: Founded by John Lehman in Marietta, Ohio, as a small operation with limited resources but a laser-focused vision and a refusal to ever say no—solving some of the most challenging silo storage and blockage issues in the grain, food, and cement processing industries.
1988-1989: Added dedicated supervisors like Phil Proctor, Mike Wagner, and Les Van Oster to handle more projects with personal service, while building a reputation on hard work and infallible reliability with a workforce of tough, determined individuals—many with farming backgrounds—who brought grit and problem-solving skills to every job.
Over 40 Years: Pioneered innovative cleaning and inspection technologies, developed proprietary equipment systems, and set industry benchmarks for safety, efficiency, and reliability—all while evolving from humble beginnings into a global leader with unchanged core values of excellence, integrity, safety, and relentless customer satisfaction.

Voices from Our Journey

Hear from our team who’ve shaped our 40-year story:

“I started in June of 1988, and back then, Mr. Lehman was right there with us on the job.” – Steve Schoonover, Chief Safety Officer
“I joined on May 15, 1987, as a field tech, and over the years worked my way up—reflecting our commitment to growth.” – Tim Smithberger, Service-Fleet Manager
“We were a small company with tough farm boys who knew how to get the job done.” – Luke Berg, Project Manager
“Our ongoing commitment to the vital industries we serve—where uninterrupted production, accurate material flow, and worker safety are critical—drives us forward.” – Michael Bailey, General Manager

Our Innovations

We’re pioneering solutions to solve your toughest silo issues.

What We Offer:

Comprehensive silo cleaning and material removal for uninterrupted production.
Advanced inspections and preventative maintenance to boost efficiency.
Emerging technologies for smarter facility insights and overcoming operational challenges.

Who We Are

Headquartered in Marietta, Ohio, Mole·Master delivers specialized silo solutions worldwide. Known for proprietary equipment, experienced technicians, and a safety-first culture. As we celebrate our 40th anniversary, we’re reflecting on our legacy while investing in people, technology, and processes for safer, smarter outcomes.