Call & Nicholas, Inc.

2025 Industry Partnership Award Recipient

Call & Nicholas, Inc. (CNI) is an international mining consulting firm that specializes in geological engineering, geotechnical engineering, and hydrogeology while providing a wide range of engineering services to the mining industry for 45 years.

Originally established in 1979 as R. D. Call, Inc. by Dr. Richard Call, the name was changed in 1981 when Mr. David E. Nicholas became a principal and partner in the firm. Today, a full staff of geotechnical engineers, engineering geologists, and technicians, with experience in both open-pit and underground mining, provides expertise in:

• Feasibility studies
• Open-pit slope angle recommendations
• Underground rock mechanics and mining method selection
• Open-pit and underground displacement monitoring
• Cost-benefit analysis
• Hydrogeologic evaluation and recommended dewatering plans
• Waste dump and tailings dam stability evaluations
• Site investigation and foundation design for waste dumps, leach pads, and water-retention dams
• Engineering geology
• Geotechnical instrumentation and blast vibration monitoring
• Operations improvement and training for blasting and construction
• Evaluation of the mechanical properties of geologic materials
• Foundation recommendations for mine facilities

CNI fulfils their clients’ needs, which range from small projects and feasibility studies, requiring only basic technical assistance and evaluation, to full rock mechanics studies, requiring considerable field work, data collection, follow-up monitoring, and evaluation.

To help clients reduce their costs, CNI collaborates closely with the on-site technical personnel on all projects, providing training and supervision, as necessary. CNI is committed to providing clients with the highest level of service and the most cost-effective solutions to each individual design problem.

CNI’s outstanding reputation has been built on the expertise and integrity of our staff and their dedication to excellence.