Freeport Indonesia
Johanes Spencer C. Rumbino is a Quality Assurance Engineer with experience in underground QA/QC. Previously, Johanes Spencer C. worked as a Geologist at MQ MINERALS, TNM Nickel, and Waigeo Mineral Mining. Rumbino holds a degree in Geological and Earth Sciences/Geosciences from UPN "Veteran" Yogyakarta.