PT Darma Henwa Tbk, together with its subsidiaries, engages in the mining support and other excavation activities, and machine repair for special purposes in Indonesia. It operates in two segments, Mining Services and Other Services. The company is involved in various mining activities, including land clearing, top soiling, drilling, blasting, overburden removal and dumping, mining, run of mine, transportation, crushing, barging, vegetation, and rehabilitation. It also engages in the coal hauling and coal barging businesses. In addition, the company engages in the road and bridge construction, mineral dressing plant installation, earthworks, drilling exploration, and civil consultant management activities, as well as rental and operating lease of industrial machinery and equipment. Further, it provides port management services comprising operational activities for the coal crushing and blending process, coal stockpile management service at the port, maintenance of power plants and the supporting equipment, port equipment maintenance service, and other services. Additionally, the company is involved in the civil engineering business. It also engages in the highway, bridge and flyover, tunnel, residential and office building, industrial and other building, and non-fishery port building construction, as well as land preparation activities. The company was formerly known as PT HWE Indonesia and changed its name to PT Darma Henwa Tbk in September 2005. PT Darma Henwa Tbk was incorporated in 1991 and is headquartered in Jakarta Selatan, Indonesia.