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Reposted from @miningengineeringeducation @riski.eka.7965 Inalohamaasobirin #coalmining #miningcoal #coalminingproject #coalmine #tekniktambang #miningIndonesia 🇮🇩 #tambang #teknikpertambangan #tambangindonesia 🇮🇩 #pertambanganindonesia #ptpetrosea #ptpetroseatbk #tekniksipil #tekniksipilindonesia #situstekniksipil https://www.instagram.com/p/CErd-cOF2lB/?igshid=2nqwzkg6edlf
