Geology, Resource and Reserve Estimation

Mineral Resource and Mineral Reserve Estimates and Audits

RPA has extensive experience in estimating, auditing, and reviewing Mineral Resources and Mineral Reserves using both manual and geostatistical methods. Reports are written in compliance with applicable securities regulations, for example, NI 43-101 Technical Reports.

RPA classifies Mineral Resources and Mineral Reserves according to the definitions published by the main worldwide regulatory bodies - CIM in Canada, PERC in the UK, SAMREC in South Africa, JORC in Australasia, and the US Securities and Exchange Commission. Mineral Resources are classified into Measured, Indicated, and Inferred categories based upon the density of data and confidence level on the resource estimate. Mineral Reserves are classified into Proven and Probable categories based upon the corresponding resource category and economic mining parameters.

RPA geologists and mining engineers use industry standard geological and mining software packages and have facilities to deal with data produced in most other commercial systems. Our tools include the following:

  • Datamine
  • Gemcom
  • Surpac
  • Vulcan
  • Micromine
  • Leapfrog
  • Sage 2001
  • Snowden Supervisor
  • MapInfo
Exploration Program Reviews and Property Assessment

RPA provides independent reviews of property exploration programs designed to ensure that comprehensive exploration and engineering data is collected for the full range of project assessment and design requirements. This work provides assurance that information collected will be reliable for public disclosure, resource estimation, and project design and permitting requirements.

RPA has generated a number of gold and base metal exploration projects for junior mining companies. This work involves compilation of existing property exploration data, development of geological interpretation and identification of exploration strategies. An exploration program is outlined based on selected target areas. Property staking and systematic exploration work programs are then carried out on behalf of the client. Work programs can include detailed geological mapping and prospecting, geochemical sampling, geophysical surveying, trenching and diamond drilling.

Quality Assurance and Quality Control

RPA provides independent reviews of quality assurance/quality control procedures in exploration programs including sample collection, preparation and analytical protocols, check assay statistical compilations, and database validation.

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