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Founded In: 1949
Size: 100-249 Employees
Annual Vol: Not Provided

Our Story

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GeoSonics, Inc. and Vibra-Tech Engineers, Inc. each have long histories in the vibration community. Our personnel include several past and present leaders in the vibration and measurement industry.

Vibra-Tech Engineers, Inc. began in 1949 as a partnership under the name of Vibration Engineering Company. Dr. L. Don Leet, one of the original founders, developed the first three-component portable seismograph used to measure blast vibration effects. The first notable use of this seismograph was in 1944 to measure the ground vibration effects of the first atomic test blast in New Mexico. The company itself was born in the anthracite coal regions of Pennsylvania, which at that time used more explosives than anywhere in the world. It began in response to the growing number of complaints about blasting vibrations from property owners near mining operations. Dr. Leet, who offered an impressive combination of academic credentials, knowledge of explosives, and communication skills, was joined by Robert L. Klotz, who assumed management of the company. The two men turned the fledgling company into one of the most technologically advanced authorities in protective services for both explosive users and the public. Its first office in Hazleton, Pennsylvania is still the corporate headquarters.

GeoSonics, Inc. traces its history to 1971 with the formation of Philip R. Berger & Associates, Inc. Philip R. Berger, a student of Dr. Leet and former Vibra-Tech employee, started an independent firm to monitor the effects of ground vibration and air overpressure from blasting, pile driving and construction activity. Based near Pittsburgh, Pennsylvania, the firm catapulted to the forefront of expert vibration monitoring and evaluation of vibration side-effects. In 1988, Philip R. Berger & Associates, Inc. transferred its operations to GeoSonics, Inc. At the same time, this firm with tremendous credentials in vibration evaluation began developing and manufacturing its own instrumentation. Those seismographs have evolved from the first printing seismograph with analysis capability to current digital advanced instruments and accessories. With instruments and distributors worldwide, its Safeguard Seismic Units enjoy wide-ranging success.

In 1995, Vibra-Tech Engineers, Inc. and GeoSonics, Inc. formed an alliance specializing in seismograph manufacturing, vibration services, noise control and blasting seismology. We are now the best known names in the seismic consulting and seismograph manufacturing industries. Our alliance gives clients a combination of 98 years of in-the-field experience serving the mining, quarrying and construction industries.

As we continue to build on our industry-leading history, we look forward to working with you and enhancing your operational success.

What We Do

Products/Services Relating to Blasting Contractors
Products/Services Relating to Engineers--Consulting
Products/Services Relating to Sound & Vibration Control

Project Experience

Airport Runway
Civil & Site Development
Dams & Levies
Education (K-12)
Gas Station
Hospital / Nursing Home
Manufacturing Plant
City / Town Hall
Terminal - Airport / Bus / Railroad
Church / Synagogue
Road / Highway
Arena / Stadium
Mixed Use
Historic Preservation
Park / Playground
Auto Dealership / Service
Non-Residential Building
Court House
Medical Office
Post Office

Service Areas

Associations & Memberships

Member of AEG (Assn. of Environmental & Engineering Geologists) AEG (Assn. of Environmental & Engineering Geologists)
Member of AIPG (American Institute of Professional Geologists) AIPG (American Institute of Professional Geologists)
Member of APC (Associated Pennsylvania Constructors) APC (Associated Pennsylvania Constructors)
Member of APW (Aggregate Producers of Wisconsin) APW (Aggregate Producers of Wisconsin)
Member of ASCE (American Society of Civil Engineers) ASCE (American Society of Civil Engineers)
Member of Associated General Contractors of America AGC of St Louis AGC of St Louis
Member of ISEE (International Society of Explosive Engineers) ISEE (International Society of Explosive Engineers)
Member of NCDOT (North Carolina Dept. of Transportation) NCDOT (North Carolina Dept. of Transportation)
Member of NSSGA (Natural Stone Sand & Gravel Assn.) NSSGA (Natural Stone Sand & Gravel Assn.)
Member of SME (Society of Manufacturing Engineers) SME (Society of Manufacturing Engineers)
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