PT Amman Mineral Internasional Tbk

Ticker

IDX:AMMN

Price (Q3 2025)

8,000

Market Cap

Rp 580,146B

Headquarters

Jakarta, Indonesia

Key East Indonesian Operations

Batu Hijau Mine, NTB

Industry/Sector

Mineral & Mining

Company Profile

PT Amman Mineral Internasional Tbk (AMMN) is one of Indonesia’s largest copper and gold producers, operating primarily through the Batu Hijau mine in West Sumbawa, West Nusa Tenggara. The company emerged in 2016 when it acquired Newmont Nusa Tenggara and has since transformed into a fully Indonesian-controlled mining powerhouse.

Amman Mineral has positioned itself as more than just a mining operator. With a strong focus on sustainability, technological modernization, and downstream integration, the company is driving Indonesia’s ambition to become a leading player in global copper supply. Central to this strategy is the development of a large copper smelter and a liquefied natural gas (LNG)–based power plant, both of which will support industrialization in Eastern Indonesia.

As of 2023, Amman Mineral ranked among the top 40 Indonesian corporations by revenue and market capitalization, a recognition of both its operational scale and strategic relevance. The company’s vision extends beyond mining profits: it aims to be a catalyst for economic growth, community development, and ecological stewardship in West Nusa Tenggara and beyond.

Sustainability and Governance

Amman Mineral integrates environmental stewardship, responsible governance, and social responsibility into its operations. The Batu Hijau mine has achieved The Copper Mark certification, affirming its compliance with international standards on sustainable mining. The company has reclaimed over 700 hectares of land, planted more than 1.5 million trees across 99 native species, and observed a measurable return of biodiversity in rehabilitated areas. Energy transition is also a priority, with solar installations, LED retrofitting, and the construction of a 450 MW LNG power plant to replace diesel generation.

Social sustainability is pursued through extensive community engagement. Amman Mineral has launched training programs for local youth in mechanical and electrical trades, supported weaving cooperatives to preserve cultural heritage, and received recognition for child-friendly workplace initiatives. Its governance structure includes an ESG Steering Committee and policies for anti-corruption, whistleblowing, and responsible supply chains, ensuring transparency and accountability across operations.

Operations and Impacts in East Indonesia

Amman Mineral’s operations are centered in West Sumbawa, a region where the company plays a defining role in economic, social, and environmental landscapes. The Batu Hijau mine not only contributes significant export revenue but also drives local development by creating employment, supporting small businesses, and investing in infrastructure. The ongoing smelter and power projects are expected to accelerate industrialization in NTB and reduce dependency on raw mineral exports.

The company has also pioneered social forestry collaborations in villages around its concession area, empowering communities to sustainably manage forests while generating additional income streams. Through reclamation and reforestation, former mining lands are being transformed into ecosystems that support local wildlife and community uses.

Amman Mineral’s presence in East Indonesia goes beyond extractive operations—it is shaping a legacy of regional growth. From vocational training and sports programs to cultural preservation and biodiversity restoration, the company acts as both a major investor and a long-term development partner in West Nusa Tenggara.

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