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About US

Our Team

Childs Geoscience Inc. is a small group of competent people who enjoy working together and solving problems in exploration geology and property evaluation. Our firm includes personnel with strong expertise in a range of disciplines who work effectively as a team. Childs Geoscience is comprised of skilled and competent personnel ranging from field technicians and geologists with sound GIS/GPS-based mapping and sampling skills to senior geologists and affiliates with the ability to run entire exploration programs from reconnaissance mapping through resource estimation and evaluation. We can provide a team of geoscientists and technicians for the duration of an exploration program. Alternatively, if a client requires just one or two people to fill a special need, we can provide skilled individuals for specific short-term tasks.

Our Commitment to Safety

Safety is part of our culture at CGI, regardless of obstacles, climate, or hazards we get the job done safely. Applicable employees are fully MSHA compliant for both surface and underground work. Childs Geoscience has never had a lost-time accident. This includes in excess of 200,000 hours worked from 2009 until now. 

Our Network

In addition to our permanent employees, we have strong working relationships with experts in hydrology, geophysics, mineralogy, petrology, geochemistry, stratigraphy, reserve estimation, mining engineering, underground mining, ground control, mine design, and permitting. These affiliates are available to supplement our in-house staff.

Meet the Team

John Childs, PhD, President, Senior Geologist

John Childs, PhD, President, Senior Geologist

John Childs, PhD, President, Senior Geologist

John Childs in a fjord in Alaska

PhD  in geology with more than thirty-five years of experience in regional,  district, and head-frame exploration. Extensive US and international  experience including surface and underground mine geology.  Childs has  had a role in metals and industrial minerals discoveries. Good  managerial and field skills, including management of exploration  programs in challenging cultural and logistical situations.  Functional  command of English, field Spanish and Portuguese; rusty German and  French, very marginal Romanian, Turkish, and other languages.   Registered Geologist and Qualified Person under NI 43-101.

Riley Leigh, BS in Geology

John Childs, PhD, President, Senior Geologist

John Childs, PhD, President, Senior Geologist

Riley Leigh conducting fieldwork

Strong experience in all phases of core drilling and logging in precious metals and industrial minerals exploration. Strong experience in trenching, panel sampling, and channel sampling on gold projects in Nevada. Strong experience in designing and executing soil, stream sediment and rock sampling programs. Experience in geophysical surveys. Strong experience in claim layout and staking. Strong leadership skills. Strong GIS skills and experience with Trimble surveying system

Ethan Coppage, MS in Geoscience

John Childs, PhD, President, Senior Geologist

Christopher Kussmaul, BS in Geology

A seasoned geologist with ten years of industry experience spanning multiple commodity types and locations. He possesses a Master's in Geoscience from Montana Tech and a Bachelor's in Geology from Fort Lewis College. He has led mining projects with both major and minor mining companies across the North American Cordillera. He is experienced in leading exploration projects, production in both underground and pit settings, development of QA/QC programs, and leadership of teams of various sizes. His academic career is punctuated by multiple publications and conference presentations.

Christopher Kussmaul, BS in Geology

Christopher Kussmaul, BS in Geology

Christopher Kussmaul, BS in Geology

Christopher Kussmaul underground mining

Strong experience in underground hard rock mining, served in a production role prior to joining CGI. Strong experience in all phases of core drilling and logging in precious metals and industrial minerals exploration. Strong experience in interpreting historical survey,  engineering, and geological reports for their use in modern projects and with the SMES process. Excellent GIS skills and experience with Trimble surveying system. Strong experience with Surpac and other mining software.

John Bailey, MS in Geology

Christopher Kussmaul, BS in Geology

Jake Worsfold, BS in Geology

John Bailey is a field-oriented geologist with over five years of experience. He holds master’s degree in geology from the University of New Mexico, where he specialized in structural geology. Bailey has experience across all stages of exploration, from open-pit to early-stage, with expertise in various deposit types and commodities, including metals and industrial minerals. He has strong experience in all phases of diamond core drilling, geologic mapping, GIS, field program management, technical writing, and structural analysis. Bilingual in Spanish, Bailey is passionate about the various locations geology has taken him and the opportunities ahead.

Jake Worsfold, BS in Geology

Christopher Kussmaul, BS in Geology

Jake Worsfold, BS in Geology

Strong experience in all phases of core drilling and logging for SEDEX mineralization. Strong experience in designing and executing soil, stream sediment and rock sampling programs. Strong experience in claim layout and staking and leadership of field crews. Strong GIS skills and experience with Trimble surveying system. Experience in geophysical surveys.

Nate Nelsen, BS in Geology

Rory Johnson, BS in Geology

Rory Johnson, BS in Geology

Nate Nelsen conducting fieldwork

Strong GIS ability and familiar with Trimble survey system. Strong experience in soil and stream sediment sampling programs. Logging, sampling, and mapping experience on mafic-ultramafic hosted PGE-copper exploration and drilling programs. Strong experience in all phases of core drilling programs.

Rory Johnson, BS in Geology

Rory Johnson, BS in Geology

Rory Johnson, BS in Geology

Strong GIS ability and familiar with Trimble survey system. Strong experience in soil and stream sediment sampling programs. Strong logging, sampling, and mapping experience on mafic-ultramafic hosted PGE-copper exploration and drilling programs. Strong experience in all phases of core drilling programs.

Diana White, Office Manager

Rory Johnson, BS in Geology

Diana White, Office Manager

Diana White

Excellent management and computer skills, highly organized, with the company since 2012. Strong skills in Adobe office suite. Excellent experience with payroll, tax filings, workers comp, health care programs. Strong experience in website design

Our Affiliates

CGI maintains industry wide contacts with research institutions, professionals and other companies

Jessica Wyss–  Expert in hydrology, project and database management, GIS, drill  program management, presently on leave for graduate work in hydrology.


Big Sky Geophysics- General geophysics, wide range of expertise including EM and IP.


Mark Cronshaw, Resource Economics LLC- Ore deposit statistics, valuation, economic modeling, forecasting.


William Crowl, Crowl Geoconsultants LLC– Bill is an expert on property evaluation and reserve estimation.


Fess Foster- Expert in Montana geology, permitting and government relations.


Chris Gammons- Geochemist and Head of the Earth Science Department, Montana Tech.


Mickey Gunter–  Head of the Department of Geological Sciences and University Distinguished Professor, Emeritus, University of Idaho. Mineralogist, expert in asbestiform minerals and potential health effects.


Robert Lankston- Geophysicist, seismic specialist, extensive petroleum background.


Helen Paris– Senior GIS manager, Pickett and Associates.


David Mogk- Petrologist, retired Head of the Earth Sciences Department, Montana State University.


Radford Langston– Expert in underground ground control.


Roughstock Mining Services LLC- Experts in underground mine design, and surveying.


Neliton Dias Santos- Partner in Childs and Santos Ltd. Consulting firm in Brazil. This firm is a  vehicle for project generation activities in Brazil including iron ore,  precious gems, industrial minerals, and gold. Neliton also provides  project and exploration support as part of regional exploration  activities.


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