Geotechnical and Tunnel Construction Consultant with over forty years experience in geology, engineering geology, heavy and underground construction, microtunneling, mechanical excavation, and dredging. He developed standards used in the industry for predicting, analyzing, and improving mechanical excavation performance and tunnel excavation efficiency. He developed and continues to enhance analytical methods to assess feasibility, select underground construction equipment, forecast, and evaluate excavation performance, and cutting efficiency, to minimize downtime, delays, difficulties with geotechnical conditions, and improve excavation efficiency. He has developed extensive studies of labor efficiencies, daily progress, and construction coordination to improve construction performance. This expert has developed analytical techniques for analyzing and understanding rock cominution under difficult conditions and has published a treatise on that subject. He has developed, established, and defined the technical elements of differing site condition claim for evaluation and presentation by the contractor and review and analysis by owners and engineers. His work on this subject has been published, widely accepted, and used in the industry.

Academic Background

City College of New York, NYC B.Sc., Geology 1964

University of Tennessee at Knoxville M.Sc., Geology 1967

University of Illinois @ Urbana-Champaign Ph. D., Civil Eng. 1975


Former professional licenses

Reg. Prof. Geologist California (1978); Georgia (1978); Idaho (1972);



Fluent English and Hungarian; Rusty French & German; Some comprehension of Spanish


Former affiliations

Member of Disputes Review Board Foundation (Education Committee); Member American Society of Civil Engineers; Boston Society of Civil Engineers; Geological Society of America; International Association of Engineering Geologists; Association of Engineering Geologists; British Tunnelling Society; Tunnel Association of Canada; International Tunneling Association; Society of Mining Engineers