Technical Experts

Expert: Joe Bennett
Company: Stedman Machine Company
Area of Expertise: Aggregates Industry Equipment, Size reduction applications
Years of Expertise: 50 years

Expert Biography: Joe Bennett has been a cornerstone of Stedman Machine Company for the past 50 years. Joe has 30 years of expertise in crushing applications, in where his knowledge includes crusher performance, as well as evaluation of crushers with various materials under an extensive listing of conditions. Joe also has 20 years of experience in Stedman's foundry. His knowledge includes material wear, wear cost analysis, valuation of metallurgy and alloys, as well as practical knowledge of material casting.

Expert: Bernard Quereillahc
Company: VOLVO CONSTRUCTION EQUIPMENT
Area of Expertise: Pipelayers and Oil&Gas
Years of Expertise: 47 years

Expert Biography: Bernard has been in the pipeline industry since 1963 and he has been a mechanical engineer with Volvo since 2007. Bernard is a specialist for pipelayers.

Expert: Marvin Shields, Jr.
Company: Conn-Weld Industries, Inc.
Area of Expertise: Aggregates Industry Equipment, Design, Application, and Manufacture of Vibrating Screens
Years of Expertise: 45 years

Expert Biography: Marvin has 45 years experience in the design, application and manufacture of Vibrating Screens. His focus today, as Vice President of Engineering, is on the selection and design of the proper equipment for each unique application. His knowledge includes application, FEA analysis, and customer support.

Expert: Larry Duhaime
Company: Griffin Dewatering Construction Services Group
Area of Expertise: Construction Dewatering/Groundwater Control
Years of Expertise: 45 years

Expert Biography: Larry has 45 years experience in all phases of groundwater control. He started with Clark Dewatering and became a part of the Griffin team when Clark Dewatering became a part of Griffin in the mid 1970s. Larry has done projects on the east coast from Maine to Georgia with many projects in the D.C. metro area. Larry has vast experience with Construction Dewatering applications and field use of Dewatering Pumps.

Expert: Tim Hoopman
Company: Griffin Dewatering Construction Services Group
Area of Expertise: Mechanical Innovation, Dewatering Equipment, R & D
Years of Expertise: 44 years

Expert Biography: During 35 years at 3M Company Tim applied his innovative engineering skills to product and process R&D programs. Tim was granted 32 patents for his work at 3M. Tim has acquired patents while consulting with Griffin Dewatering. He is looking at the ergonomics, safety and efficiency at the worker/machine interface in equipment. His efforts include the NEW pipe puller for wellpoint systems that saves labor and greatly increases worker safety Griffin is introducing the Pipe Puller at CONEXPO-CON/AGG.

Expert: Jim Nordstrom
Company: Volvo Construction Equipment
Area of Expertise: Construction Equipment
Years of Expertise: 40 years

Expert Biography: I have been working with Excavators and Excavator segmented products in the technical support field. I bring 40 years of experience in the construction equipment industry. Today my focus is the Volvo Excavator's and our new line of Volvo Pipelayers.

Expert: Don Mingerink
Company: Volvo Construction Equipment North America
Area of Expertise: Aggregates Industry Equipment, Earthmoving Industry Equipment, Technical and Customer Support
Years of Expertise: 40 years

Expert Biography: I have been in technical and customer support for 40 plus years in the mining and construction equipment industry, with the current company for 37 years.

Expert: Bob Marcum
Company: Volvo Construction Equipment
Area of Expertise: Asphalt Industry Equipment, Earthmoving Industry Equipment, Motor Graders, Soil and Asphalt Compactors
Years of Expertise: 39 years

Expert Biography: Bob has 39 years of experience in the construction equipment industry with an emphasis in machine specifications and application.