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What is the purpose of backfilling in mining?

A. Ore extraction

B. Roof support

C. Material hauling

D. Explosive storage

Answer: Option B

Solution (By Examveda Team)

Backfilling refers to placing waste or material into mined-out stopes.The correct answer is: Roof supportIt stabilizes the ground, prevents subsidence, and improves safety.Used in methods like cut and fill or where voids must be filled.

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