Martabe Project

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  • OfferingsMining engineering, Tailings , Tailings and mine waste management
  • CommoditiesGold, Silver, Precious metals
  • LocationSumatra, Indonesia
  • ClientG Resources
  • Timeframe2010 - 2012
  • Solution phaseCreate (EPCM)
  • Project value$US250m
  • ServicesEngineering, Global procurement, Construction management, EPC/EPCM

Project design overcomes environment challenges

Located on the Sumatra Island, Indonesia, the Martabe plant consists of crushing, grinding, leaching/CIL, carbon regeneration, cyanide detoxification, tailings storage facility and water polishing to produce a gold/silver product.

The plant throughput is 4.5 Mt/y (563 t/h) of ore at a nominal life of mine grade of 1.9 g/t gold and 25 g/t silver, producing 206 000 oz/a of gold and 1 990 000 oz/a of silver. The plant was designed with provision for a future upgrade to 6.6 Mt/y.

Ausenco’s scope covered the EPCM of the 4.5 Mt/y gold/silver plant and associated infrastructure, including the water polishing plant, air services, earthworks, drainage and the accommodation camp.

  • The plant and infrastructure were designed to cope with a highly seismic location
  • The plant is located in a high rainfall area, which made earthworks challenging, and influenced the design of the plant, in particular civil/structural design
  • Mercury and copper were catered for in the plant design.

On September 24th 2011 the Chairman of G Resources presented Ausenco with an award for achieving 1,000,000 manhours LTI free on the project. This achievement demonstrates Ausenco’s ability to work safely and effectively under challenging conditions.