Company

An Indonesian operator built for long-horizon resource development.

PT Indogold Mineral Makmur develops gold and rare-earth-element assets in Indonesia. The company is part of the Graha Makmur Coalindo group, with integrated mining, processing, and refining capability operated under Indonesian law.

Overview

Vertically integrated, group-supported, Indonesia-anchored.

PT Indogold Mineral Makmur is an Indonesian incorporated mining company headquartered in Jakarta. The business operates within the Graha Makmur Coalindo (GMC) group, with integrated mining, processing, refining, and stockpile logistics operated entirely under Indonesian law.

Material is produced under Indonesian production permits, processed through leaching and CIL circuits, and refined on site to doré bullion. Research and technical work is undertaken in collaboration with Indonesian government agencies and national geological research programmes. The company sees responsible mining practice — full regulatory compliance, environmental safeguarding, and community engagement — as a precondition for operating, not an add-on.

Aerial view of OMS Bromo bulk carrier at sea with Indonesian support vessels alongside

OMS Bromo — working vessel supporting offshore operations off the Banten coast.

Leadership

Board of Directors.

PT Indogold Mineral Makmur is led by an Indonesian board with operational and supervisory responsibility under Indonesia's two-tier corporate governance structure.

President Director Dr. Henry Salim Ph.D., Administration

Dr. Henry Salim is President Director of PT Indogold Mineral Makmur. In Indonesia's two-tier corporate structure, the President Director carries the principal executive responsibility for the company's strategic direction, operational management, and statutory representation.

Dr. Salim's professional focus is the development and operation of integrated mineral businesses in Indonesia — combining the regulatory, technical, and commercial disciplines required to take a project from permit through production and refined output. Under his leadership, the company has built out an integrated production and refining capability operated entirely within Indonesia, in line with national priorities for downstream mineral processing.

He holds a doctorate in Administration and represents PT Indogold Mineral Makmur in dealings with regulatory authorities, banking partners, and counterparties.

Commissioner Suhartono Sardjono

Suhartono Sardjono serves as Commissioner of PT Indogold Mineral Makmur. The Commissioner provides supervisory oversight of the Board of Directors, with responsibility for ensuring that the company's strategy and conduct of business meet the standards expected of an Indonesian limited liability company operating in the mining sector.

Community

Engaged in the communities where we operate.

The group conducts direct community engagement in Bayah, Banten — including water-safety training, rescue drills, and local equipment donations in cooperation with local authorities and the Indonesian military.

GMC team with local officials and Indonesian military personnel during a community engagement event — Community liaison — group staff and local officials, Bayah, Banten.

GMC team in orange life jackets standing with an inflatable rescue boat on the Bayah beach — Water-safety drill — GMC and local teams with rescue equipment, Bayah coast.

Water rescue drill on a river — GMC team with Indonesian military and local community members — Rescue training — joint exercise with TNI and community, Banten.