<p>PSI has appointed Nicholas Roth, PE a principal consultant for their construction materials and testing service line.</p>
<p>Roth is a graduate of the University of Missouri - Columbia with a Bachelor of Science in civil and environmental engineering and a Master of Science in geotechnical engineering.</p>
<p>Located in the St. Louis office, he has been with PSI since 2003 and serves a dual role as a project manager.</p>
<p>Professional Service Industries, Inc. (PSI) is an independent engineering and testing firm and one of the largest consulting engineering firms in North America, with approximately $250 million in annual revenues.</p>
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