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What is Underground Mining Advance Rates Comparison about?

This document discusses benchmark advance rates for underground hard rock mine development using drill and blast or mechanical excavation methods. Drill and blast development typically achieves advance rates of 4-9 m/day due to the sequential nature of the processes involved. Faster mechanical excavation, like tunnel boring machines (TBMs), can achieve much higher rates of 8-45 m/day by performing excavation, mucking, and ground support concurrently. The document reviews opportunities to improve drill a

Author

Eduardo Mena

Language

EN