• Managed coal quality from loading to discharging ports, ensuring adherence to industry standards.• Evaluated shipments on a weekly, monthly, and annual basis to optimize quality and efficiency.• Led field teams at South, Central, and East Kalimantan, ensuring improvement of competency and performance.• Coordinated with surveyor and buyer for precise coal blending at vessels.

• Oversaw pre-shipment coal quality and witnessing sample processes at lab.• Coordinated with surveyors and suppliers to ensure accurate coal checking and sampling.• Managed stockroom and stockpile cargo recapitulation.• Calculated vessel laytime to enhance logistic efficiency.

• Geological mapping within the designated project area• Petrography and geochemistry analysis of samples that represent the project area• Designing map based on data and interpretation• Composing a daily and final project report

• Geological mapping within the company mine• Quality control of raw materials such as limestone and clay• Field surveying• Supporting HSE management at mine