PT Petrosea Tbk engages in the provision of contract mining, engineering and construction services. It operates through the following segments: Mining, Services, and Engineering & Construction. The Mining segment focuses on mining contracts including overburden stripping, drilling, blasting, lifting, hauling, mine services, and mine partnering. The Services segment covers supply base facilities and port services. The Engineering & Construction segment provides a comprehensive range of multi-disciplinary engineering, procurement and construction services to oil and gas onshore and offshore, infrastructure, industrial and manufacturing and utilities sectors. This segment includes supply of skilled trade personnel and equipment hire services. The company was founded on February 21, 1972 and is headquartered in Tangerang, Indonesia.