Call Nicholas

Call & Nicholas, Inc. (CNI) is a geotechnical engineering consulting firm based in Tucson, Arizona, specializing in the mining and metals industry since 1979. The company employs between 100 and 200 professionals, including geotechnical engineers and engineering geologists, and has an estimated annual revenue of $5 million to $25 million. CNI offers a range of services, including geological engineering, hydrogeology, slope stability analysis, rock mechanics, and geotechnical software development. They support mining projects of all sizes, from feasibility studies to comprehensive rock mechanics studies, emphasizing collaboration with on-site personnel to enhance efficiency and reduce costs. Additionally, CNI provides geotechnical instrumentation and monitoring equipment through its related entity, Call & Nicholas Instruments, Inc., which aids in slope stability and underground displacement monitoring. The firm has established a strong reputation for its expertise and dedication, serving clients in the mining sector worldwide.