Grosvenor Engineering Company

About uS

Grosvenor Engineering Company (GEC) is a mining consulting firm formed in 1985 by Niles E. Grosvenor, P.E. and David E. Krebs, P.E. Niles retired in 2001. David E. Krebs and Sandra J. Krebs are the owners and principals of the firm.

Since 1985, GEC has completed over 200 engineering assignments in coal, copper, trona, precious metals, phosphate, potash, aggregate, salt, and stone. These projects include reserve and project evaluations, mine planning, operational audits, loan validation and monitoring, litigation support, acquisition support, valuation and assistance in the sale of precious metals royalty, and insurance claims. Various projects included expert testimony in court and before arbitrators. GEC projects have been located throughout the United States and in Canada, Bulgaria, Indonesia, and Mongolia.

Clients of GEC include major banks, mining companies, electric utilities, property owners, investors, insurance companies, and law firms. We are proud of the wide variety of projects we have successfully completed. We specialize in a quality product, rapid response, and careful cost control. Through the use of carefully selected subcontractors and associates in computer applications, technical illustration, geology, design engineering, and project management, GEC is able to furnish staff for a wide range of projects in a prompt and cost effective manner.

Typical Projects

  • Property Evaluations
  • Reserve Audits
  • Operational Audits
  • Mine planning
  • Loan Evaluations
  • Investment Due Diligence
  • Litigation Support
  • Equipment Appraisal


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