HEA provides full services in facility development from concept through construction. Our services include but are not limited to: Metallurgical & Process Engineering Feasibility Studies / Due Diligence Metallurgical Test Programs Geological & Ore Reserves Mining & Mine Planning Detail Engineering Civil Engineering Concrete and Structural Engineering Mechanical Engineering Piping Engineering Electrical Engineering Instrumentation and Controls System Engineering Architecture (Industrial) Site Development Procurement Construction Management Mine Process Plants & Facilities Chemical Process Systems Crushing, Conveying, and Milling Environmental Impact Statement (EIS) Support Reverse Osmosis Ion Exchange Electrical Power Transmission & Distribution Pumping Systems Piping Design Tankage