BUSINESS AREAS

Mine closure plan

Main business areas

Why Mine Closure Plan? - Mining operations impact negatively the environment
- High cost of mine closure
- Corporate awareness of closure in mine life cycle
- Closure planning begin during project conception phase
Closure issues - Hazardous materials
- Hazardous and unsafe facilities
- Contaminated sites
- Acid and metalliferous drainage(AMD)
- Radioactive materials
- Fibrous(including asbestiform) materials
- Non-target metals and target metal residues in mine wastes
- Management of mine pit lakes
- Adverse impacts on surface and groundwater quality
- Erosive materials
- Design and maintenance of surface water management structure
- Dust emissions
- Flora and fauna diversity/threatened species
- Challenges associated with rehabilitation and revegetaion - Visual amenity
- Heritage issues
- Alteration of the direction of groundwater flow
- Alteration of the depth to water table of the local superficial aquifer
- Alteration of the hydrology and flow of surface waters
Issues for Mine Closure 1.General Issues : landscape, water quality, biological ecological resources Landuse, Health and welfare, social development and cultural changes, economic development
2.Economic and Financial Consideration
3.Risks in Mine Closure Plan
4.Acid Rock Drainage (ARD)
5.Financial Assurance
6.Perpetual Care
Open-fit mine (southeast asia)
and Prediction of Acid Rock Drainage(ARD)
Hydrogeological modeling
Conceptual Design & Detailed Design
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