unconsolidated backfill
unconsolidated backfill
The non-compacted material which is in place in a trench.
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Ore from the underground mines will be predominately extracted via top-down mechanized longhole open stoping, with a smaller amount mined by a bottom-up modified Avoca method using unconsolidated backfill. The majority of the underground ore is in the top 600 m and has a relatively short haul to surface.
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