STUDY OVERBUDEN FRAGMENTATION BY BLASTING RESULT USING AIRDECK METHOD (COMBINATION MIDDLE AND BOTTOM AIRDECK) OF DIGGING TIME EXCAVATOR EX ̉̉ 3600 AND PC ̉̉ 4000 AT MINE COAL PT BUMA JOB SITE LATI, EAST BORNEO, INDONESIA
Mining activities begins with overburden removal. Before overbuden excavated, the rocks must broken used the drill-blasting method. The drilling activity was carried out using Atlas Copco DM 45 drill kit, type of drill used was a 7 7/8 inchi with tricon roller bit. Pattern drilling used is stagger...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/22678 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |