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Providing mine engineering services to the world's mining industry since 1983.

Independent Mining Consultants, Inc. (IMC) was founded in 1983 by Michael Hester, John Marek, and Herb Welhener. Prior to starting IMC, all three had established substantial careers in the mine engineering and consulting fields. IMC's personnel has remained consistent in the more than 33 year history of the corporation.

Contact Us

IMC personnel can be contacted through our main office.

Independent Mining Consultants, Inc.
3560 East Gas Road
Tucson, Arizona 85714
General Inquiries: 

Information regarding Independent Mining Consultants services, can be made via telephone or email. Please feel free to contact us!

Mr. John M. Marek

Vice President
Mr. Herbert E. Welhener

Vice President
Mr. Michael G. Hester

General Inquiries
Ms. S. Yvette Gengler - Senior Geological Engineer

Our Recent Projects

View our Project Map »

  • Calmat Operations

    Arizona Department of Transportation

    Arizona, USA
  • Wilhelm Project

    Blue Circle Cement, Inc.

    California, USA
  • Copper Flat

    THEMAC Resources

    New Mexico, USA
  • MacArthur Project

    Quaterra Resources Inc.

    Nevada, USA
  • CEMEX Gypsum

    National Gypsum Co.

    Arizona, USA
  • La Cigarra Project

    Coeur Mining, Inc.

    Chihuahua, Mexico
  • Gold Bar

    McEwen Mining Inc.

    Nevada, USA
  • Sonora Lithium Project

    Bacanora Minerals Ltd.

    Sonora, Mexico
  • San Miguel (Pirquitas Mine)

    Silver Standard Resources, Inc.

    Jujuy, Argentina
  • Dragoon Marble Quarry

    Gadsden Sonora Holdings LLC

    Arizona, USA