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Operating Plants

Capital Cost Estimating

Process Development and Design

Feasibility Studies

Technical Evaluations

Project Audits

Sampling Studies

Services are provided to operating plants in support of the clients staff.  Activities may range from periodic monitoring of metallurgical performance to assistance in solving operating problems.

Capital cost estimates are performed to conceptual or pre-feasibility standards using a proprietory computer based estimating and cost data base system.

Comprehensive services are offered in the area of process development, beginning with the management and supervision of metallurgical testwork programs.  Testwork is normally conductedin selected commercial laboratories.  Test Data are reviewed and interpreted, and any economic studies necessary to the rational development of optimum design parameters are conducted. 

Process design criteria are developed from the analysis of metallurgical testwork.  The resulting report contains all of the process information necessary for detailed plant design by the selected engineering firm.

EHA conducts the metallurgical portion of the pre-feasibility/feasibility studies.  In cooperation with the associated firms and other specialists, complete project pre-feasibility or feasibility studies can be undertaken.

Existing feasibility studies are audited for completeness and reliability.

EHA conducts detailed technical and economic evaluations of new or competing processes and/or equipment

Technical and cost audits of existing operations or new projects are conducted on behalf of owners, prospective purchasers/investors, or financial institutions, including NI 43-101 compliant reports.  Involvement is normally restricted to process and surface facilities; however arrangements can be made to undertake complete project evaluations.

In cooperation with an associated firm of geological engineers, sampling studies of deposits are undertaken, ranging from determining the quality of assay data and evaluation of the "nugget" effect to design and provision of bulk sampling facilities.