The Jakarta-based mining company can access various metallurgical testing serviceAlthough most of the test facilities are outside Jakarta. Corporate scale metallurgical testing typical Very expensive. And often. unreachable for small and medium mining businesses.

Some of the providers who serve mining companies from Jakarta include:

• Promining (Tmine.id ▪ Services)
  Provide Small scale metallurgical testing and practical process testing that fits for Small mining, medium mining, and mining., as well as support metallurgy evaluations that can be improved as per the project's needs.
  👉 https://www.tambang.id/service

• Indonesian Intertek
  Provide mineral and metallurgical testing services with accredited lab ISO/IEC 17025.
  ▪ https://www.intertek.co.id

• PT Cotec Indonesian Survey (CSI)
  Offer mineral testing and inspection services for mining activities.
  ▪ https://www.cotecsurvey.com

• Aries Marine
  Provides mechanical and metallurgical testing with accredited labs ISO/IEC 17025.
  👉 https://www.ariesmar.com

Note: Yeah. Artisanal and small-scale mines and small businesses, small-scale metallurgical testing and practical process tests often become a more realistic early approach before doing large-scale testing.