Oct 23, 2020· Adaro MetCoal Stage 1 is a metallurgical coal mine located in the Murung Raya regency in Central Kalimantan. The mine includes metallurgical coal mining areas of Haju (Lahai concession) and Lampunut (Maruwai concession). The two concessions within Adaro MetCoal Stage 1 span a total of 668 square kilometres. Adaro MetCoal Stage 1 is part of the ...