Formasi Balikpapan
BALIKPAPAN FORMATION (Tmbp) source : Mineral dan Batubara (esdm.go.id) Balikpapan Formation (Tmbp) Formasi Balikpapan show in map with green colour, depostite coal with low Cv Gar, coal calories in range 3000-4000 gar, with thick layering about 5 layer, this range calories in needed for blending coal only, rarely hard to sell for economis in this range of calories. This coal transport to Mahakan river, through belayan river didn’t needed long road, so can more effiecient.