Call & Nicholas is an internationally recognized geotechnical engineering and hydrogeology firm based in Tucson, AZ that provides consulting services to clients in the mining industry. CNI has been in existence since 1979 and employs engineers, geologists, hydrogeologists and support staff. We are an industry leader in geotechnical services and proud to be 100% employee owned. Our hydrogeological services include open pit depressurization programs, hydraulic testing, numerical modeling, and installation and management of piezometers and monitoring wells.
Why Call & Nicholas
We believe that a happy workforce is a more committed and efficient workforce. In addition to an outstanding benefits package, our employees enjoy access to professional development and skill-building resources, flexible schedules, and a collaborative and inclusive work environment. Benefits include unique travel opportunities, competitive salary, paid overtime, flexible schedule, healthcare, life insurance, vacation, 401(k), and bonuses.
The culture at Call & Nicholas is one of innovation and continuous improvement. We value curiosity, camaraderie, hard work, diversity of opinion, and freedom of communication.
Our Hydrogeology Group
Our hydrogeology group differs from conventional hydrogeological consulting firms in that our work is fully integrated with our in-house geotechnical engineering studies. Integration begins with field characterization programs that address both geotechnical and hydrogeologic needs, including numerical studies that couple geotechnical stability and pore pressure models. We also conduct classical hydrogeological studies such as characterization and testing of groundwater systems.
Commonly used software includes FEFLOW, AQTESOLV, ArcGIS/QGIS, AutoCAD, Surfer, and Microsoft Excel. Commonly used programming languages include Python, C++, and Fortran.
Job Skills
Language Skills
Physical Demands
Work Environment
The work environment characteristics described here are representative of those an employee encounters while performing the essential functions of this job. While performing the duties of this job at the office the employee frequently will be inside.
Benefits
Schedule: Full time, normal business hours

CALL & NICHOLAS (CNI) is an international mining consulting firm that specializes in geological engineering, geotechnical engineering, and hydrogeology. We have been providing a wide range of engineering services to the mining industry for over 44 years. Today, a full staff of geotechnical engineers, engineering geologists, hydrogeologists 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 provides geotechnical engineering services for domestic and international mining projects of all types and sizes. Our clients’ needs 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 our clients reduce their costs, we work closely with the on-site technical personnel on all projects, providing training and supervision as necessary. CNI is committed to providing our 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.