Mitchell E. Duffield, P.E.

Mitchell E. Duffield, P.E.

Mitchell received a Bachelor of Science degree in Mechanical Engineering from Missouri University of Science and Technology (Missouri S&T) in 2010. Growing up as the son of an automotive mechanic, and performing maintenance on his personal and family vehicles, Mitchell gained skill and knowledge regarding automotive systems and operation. During college, Mitchell completed an internship…

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Santos Reyes

Santos received a Bachelor of Science degree in Mechanical Engineering from Southern Illinois University – Edwardsville in 2014. While in college Santos spent a year completing a co-op, including making and reviewing technical drawings using 3D modeling software, and assisting on the manufacturing floor. Santos began his professional career in research and design in Saint…

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Nathan M. Lombardo, P.E.

Nathan received a Bachelor of Science degree in Mechanical Engineering from Washington University in St. Louis in 2010. During college, Nathan was employed in the construction of commercial and industrial buildings, including office layout and design with CAD software, heavy equipment operation, installation of fire suppression systems, and electrical wiring. After graduation, Nathan began his…

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Timothy B. Dugan, P.E.

Tim received a Bachelor of Science degree in Electrical Engineering from the University of Missouri-Columbia in 1999, and is a Registered Professional Engineer in multiple states, including Missouri and Illinois. During his consulting engineering career, Tim has acquired over 19 years of experience as an Electrical, Instrumentation and Controls engineer, working on heavy industrial projects…

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Wes Wright, P.E.

Wes received a Bachelor of Science degree in Civil Engineering from the University of Missouri–Columbia in 1984.  His technical expertise is bolstered by an extensive practical knowledge of construction materials, equipment, workmanship, and project phasing.  This knowledge enables him to determine and document the facts of the issues at question, determine the cause, and assist…

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Timothy M. Krehbiel, P.E.

Tim received a Bachelor of Science degree in Mechanical Engineering from the University of Missouri-Columbia in 2007. During his time in college, Tim was employed as a mechanic for a large powersports dealership.  His time spent performing maintenance and repairs on most brands of ATVs, motorcycles, and watercraft, gives him an extensive background in vehicle…

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Jeff W. Polster, P.E.

Jeff received a Bachelor of Science degree – Magna Cum Laude in mechanical engineering from the University of Missouri – St. Louis/Washington University Engineering Program.  He was on the Dean’s List and acquired his degree by attending classes at night while working as a mechanical designer for a manufacturing company.  His education also includes a…

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Jack Nevins, CCE, EnCE, PI

Jack received a Bachelor of Science degree in Applied Physics with an Electrical Engineering minor from the University of Nevada – Las Vegas. Jack brings over 20 years of diverse technical experience to Semke Forensic, including 15 years providing senior level forensic and investigative services to the insurance, legal and corporate communities.  As a Data…

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Fred B. Semke, P.E.

Fred received a Bachelor of Science degree-Magna Cum Laude in Mechanical Engineering from the University of Missouri-Columbia in 1983 where he was recognized as a University Scholar.  Fred subsequently joined a major aerospace manufacturer and continued his education at night, obtaining a Master of Science degree in Engineering Mechanics from the University of Missouri-Rolla in…

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Daniel J. Sovar, P.E.

Dan received a Bachelor of Science degree in Mechanical Engineering from Washington University in St. Louis in 1992.  Thereafter, he started his career as a design engineer in the air conditioning and refrigeration field where he designed air conditioning and refrigeration components and remote refrigerated display cases.  Dan subsequently worked for two major fuel-fired appliance…

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