Est. 1986 • Marietta, Ohio

Our Legacy of
Ingenuity,
Safety & Results

What started as hands-on grit has become an industry benchmark for safety and efficiency.
Mole·Master is just getting started.

All 50 States

30+ Countries

Thousands of Cleanouts

Project after project, industry after industry, we have built a global legacy of solving the toughest material-flow challenges. With thousands of cleanouts completed across all 50 states and more than 30 countries, and with an expanding portfolio of engineered solutions, our focus remains the same: reducing downtime, extending asset life, and delivering unmatched reliability.

The Journey

The Mole·Master Timeline

80s

Founding & Firsts

1980s

• First Colony silo cleanout begins—R. John Lehman joins
• Dec 1986: Lehman acquires Mole·Master division
• First grain project for Cargill—First "Cootie" drill & Junior 180 built
• Dedicated supervisors added to handle growing demand with personal service
• First international projects in Guadeloupe & Martinique
• First $100k project completed

90s

Building Capacity

1990s

• Move to 117 Industry Road—R. John Lehman sole owner
• Multiple years of zero lost-time accidents
• Bridge Breaker / Arch-Master launched—Serve All acquired
• First vacuum trucks & hydro-blasting—Depots in CA & TX
• Services in 20+ industries—First $200k project

00s

Scale & Standardization

2000s

• Move into current 600,000 sq ft facility in Reno, OH
• Hydraulic & Pneumatic Junior 360 developed
• Corporate contracts with Cargill, Mars, Lehigh Cement & more
• First project in Hawaii—all 50 states covered
• First $500k project completed

10s

Recognition & Expansion

2010s

• 25th Anniversary celebrated
• Featured in Grain Journal
• Mid-Ohio Safety Council Award—zero lost-time
• New website with technical resource library launched
• Abrasive blasting services expanded
• Member of Renewable Fuels Association

20s

Thought Leadership

2020s

• Featured in World Cement
• Major international trade-show presence
• Continued investment in proprietary equipment and emerging technologies

Legacy of Excellence Series

Voices from Our Journey

The People Behind the Legacy

Hear from the team who built our 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

What We Do