Dairi Lead-Zinc Project

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Project undertaken in mountainous terrain

The Dairi Project, located 150 km South of Medan in the Dairi Regency in North Sumatra, Indonesia, entails the design and construction of a 1 Mt/y zinc-lead concentrator and associated infrastructure.

The flowsheet comprised crushing, SAG milling, flotation, concentrate dewatering and tailings placement. When in production, the Dairi Project will be the only operating zinc-lead mine of significance in Indonesia.

Ausenco was engaged to perform the detailed engineering, procurement and construction management (EPCM) services for the processing plant and associated infrastructure.

The scope of services included crushing, milling, flotation, concentrate filter and services; paste plant; plant buildings, accommodation camp construction, power station, access roads, tailings dam construction, concentrate storage and ship loading jetty, and upgrade of 22 km government road from Parongil to Sidikalang.

  • excellent safety record with 1 LTI for 1.8 million man hours worked
  • logistics and freight successfully executed in rainforest site
  • site layout constraints as a confined site location required to produce two process plants
  • extensive earth works to be undertaken in mountainous jungle terrain
  • project placed on hold in 2009.

Project details

Business line
Minerals & Metals
PT Dairi Prima Minerals (Herald Resources)
2005 - 2009
Solution phase
Create (EPCM)
Project value
Program management, Engineering, Global procurement, Construction management, EPC/EPCM