Hatch provides extensive experience in the following areas:
- Process Development and Design
- Flowsheet development
- Process modeling
- Heat and mass balances
- Laboratory testing programs
- Design
- Management and interpretation
- Studies and Engineering Services
- Feasibility studies
- Basic and detail engineering
- Procurement
- Project and construction management
- Due diligence
- Technical assessments
- Comminution
- Primary/secondary crushing
- SAG/rod/ball milling
- Fine grinding
- Refractory Gold Ore Pre-Treatment
- Pressure oxidation
- Bio-oxidation
- Oxidative roasting
- Gold Recovery
- Gravity
- Carbon-in-leach
- Carbon-in-pulp
- AARL/Zadra carbon elution
- Merrill-Crowe, zinc precipitation
- Electrowinning
- Gold Refining
- Precipitate retorting
- Primary gold ore
- Cyanide Destruction
- Safety Reviews and Commissioning
- HAZOP reviews
- Operating manuals
- Plant commissioning
- Start-up assistance
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 Pueblo Viejo has significant amounts of zinc (2.6 billion pounds), copper (358 million pounds) and silver (88 million ounces) contained within the gold reserves. More >
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