Call & Nicholas. CNI, an internationally recognized geotechnical engineering consulting company, has been delivering a huge array of engineering services to the mining industry since 1981. Originally set up in 1979 as R. D. Call. by Dr. Richard Call, the name was changed in 1981 when David E. Nicholas became a principal and partner in the company.

Contact Details

  City Tucson , AZ
  Zip Code 85745
  Address 2475 North Coyote Drv
  Phone Number (520) 670-9774