•Newburg, Walker, Rogers, Joint Venture Contractors, Slatington, PA 1989  – 1991-geologic and geotechnical studies associated with PA turnpike tunnel  construction

• Dames and Moore, Inc., Latham, NY, 1994-geologic study associated with  ground-/surface water contamination project in the Taconic slate belt

•Anschutz Overseas Company, Denver, CO, 1997-1998, -petroleum reservoir  analysis, seismic interpretation, structural and stratigraphic studies, and  field seminar in Spanish Pyrenees