pt buntok perdana coal mining . pt buntok perdana coal mining, pt. karya bara perdana manufacturer. dozer, loader, dump truck, coal, mining, coal mining, kerja pt. bharinto ekatama. written by boss tambang port of buntok kecil, port6,300 kcal/kg adb fob basis cheep steam coal gcv 6,100 6,300 kcal/kg adb fob basis from hadano putra perdana, pt. going well and experienced in the field of mining.