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Call & Nicholas

Call & Nicholas is an international mining consulting firm specializing in geological engineering, geotechnical engineering, and hydrogeology.

Mining
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Headquarters
Tucson, Arizona, United StatesSource: RevenueBaseRetrieved October 13, 2026
Employee range
51 to 200Source: RevenueBaseRetrieved October 13, 2026
Founded
1980Source: RevenueBaseRetrieved October 13, 2026
Published list appearances
49 supported appearances ↗Source: RevenueBase lists
The company at a glance

What does Call & Nicholas do?

The firm provides engineering services to the mining industry. Project scopes range from small projects and feasibility studies with basic technical assistance and evaluation to full rock mechanics studies involving field work, data collection, follow-up monitoring, and evaluation.

Based on the company’s public LinkedIn information, supplied through RevenueBase.

Who it serves

CNI serves domestic and international mining projects of all types and sizes.

What the business offers

Services & capabilities.

Mining engineering studies

The firm provides feasibility studies, open-pit slope angle recommendations, and underground rock mechanics and mining method selection.

Source: LinkedIn company description · Retrieved October 13, 2026

Hydrogeologic evaluations

The firm provides hydrogeologic evaluations and recommends dewatering plans.

Source: LinkedIn company description · Retrieved October 13, 2026

Explore the business in context

Company lists.

Supported appearances on published RevenueBase lists, including available memberships beyond displayed rankings.

Positions describe ordering within each source list. See how lists are built ↗

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BADGE PREVIEWCall & Nicholas listed #2 on Mine feasibility study firms, September 19, 2026Open the published source list.
Call & Nicholas

#2 Mine feasibility study firms

Snapshot: September 19, 2026

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Company information

Sources & data notes.

RevenueBase prepared this profile from the company’s public LinkedIn information and RevenueBase company data. These source records were retrieved on October 13, 2026. AI helped summarize these sources, with a separate automated check against the source text completed on November 4, 2026. Directory positions use company-contact counts from separate saved list snapshots dated September 4, 2026, September 12, 2026, September 15, 2026, September 16, 2026, September 17, 2026, September 18, 2026, September 19, 2026, September 20, 2026, September 22, 2026, September 23, 2026, September 26, 2026, September 27, 2026, September 28, 2026, September 29, 2026, October 9, 2026, October 10, 2026 and October 11, 2026. How the company lists are built.

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