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Open Pit Senior Mine Geologist
Montana, United States
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Senior Mine Geologist


Position Responsibilities:


Resource Modeling & Estimation

•          Develop, update, and validate 3D geological and resource models.

•          Interpret lithological, structural, alteration, and mineralization data from drilling programs.

•          Conduct resource estimation and classification using geostatistical techniques and industry best practices.

•          Prepare mineral resource updates and support reserve conversion activities.

•          Maintain geological databases and ensure data quality assurance and quality control (QA/QC).

•          Support annual and life-of-mine resource reporting.


Resource Reconciliation

•          Perform reconciliation between resource models, grade control models, and production results.

•          Identify and evaluate variances affecting mine and mill performance.

•          Recommend improvements to estimation methodologies and geological interpretations.

•          Monitor model performance and implement continuous improvement initiatives.


Technical Support

•          Provide geological input to mine planning and scheduling processes.

•          Collaborate with mine engineers to optimize pit designs and extraction strategies.

•          Support drilling programs through targeting, logging standards, and geological interpretation.

•          Provide geological interpretation of paragenesis, mineralization, alteration, zoning and structural controls of porphyry copper deposits.

•          Assist with economic evaluations and technical studies.

•          Participate in feasibility, optimization, and expansion projects.


Reporting and Compliance

•          Prepare technical reports, resource statements, maps, and presentations.

•          Ensure compliance with company resource reporting standards

•          Maintain documentation supporting resource estimates and technical assumptions.

Required Education

•          Bachelor's Degree in Geology, Geological Engineering, Earth Sciences, or related discipline.

•          Master's Degree in Geology or Geostatistics preferred.



Required Experience

•          Minimum 10 years of progressive experience in mining geology, with significant experience in open pit copper operations.

•          Demonstrated experience in mineral resource estimation and geological modeling.

•          Experience with drilling methods and QA/QC of exploration data.

•          Experience with resource reconciliation and mine planning integration.

•          Proficiency in Leapfrog Geo and MineSight,

•          Strong knowledge of geostatistics, block modeling, variography, and resource classification.

•          Advanced Microsoft Office and technical reporting skills.

•          Strong understanding of geological modeling and resource estimation methodologies. 


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