IDNStudy.com, ang komunidad ng pagbabahagi ng kaalaman. Magtanong ng anumang bagay at makatanggap ng mga maalam na sagot mula sa aming komunidad ng mga propesyonal.

Subject: Section: # I Underground mining is surface mining. 2. Dredging is an example of underground mining 3. In surface mining miners need to create a Funnel so they can reach the ore minerals. 4. Modern mining technology ases geophysical techniques to locate prospective mineral ore deposit. 5. Both surface and underground mining user explosives. more expensive and dangerous than​