Heap Leach Pad (HLP) Project

Tierra Group provided site-wide geotechnical investigation oversight and coordination for two facilities (Demonstration and Commercial) and associated ponds.

In addition, Tierra Group performed engineering and design work for each facility: Demonstration HLP to Issued for Construction (IFC) level and Commercial HLP to a pre-feasibility level. Developed relevant HLP material quantities and capital costs, issued HLP design reports, performed four Trade-off Studies, and conducted an independent review and gaps analysis to bring testwork and process design to a pre-feasibility level.

Aluminum Sulfate Storage Facility Siting Study

Tierra Group applied specific design parameters to produce a design basis and criteria for designing an Aluminum Sulfate Storage Facility (ASSF). Tierra Group created a strengths, weaknesses, opportunities, and threats (SWOT) matrix and civil layouts for three potential ASSF locations to a level of detail appropriate for a scoping-level study. A technical memorandum was issued detailing each ASSF layout, SWOT considerations, facility location and layout, and recommended future studies. Figures showing facility layouts, cross-sections, assumed liner system configurations, and surface water controls were created to accompany the technical memorandum.