"Bloody hell he'd be busy, 85t is a lot of dirt."
Joking or serious?
85t is only 134 wheelbarrow loads.
Dry blow miners use front end loaders/back hoes.
Even a bobcat can move over 1 tonne per bucket full.
Buckets are generally over a cubic metre, but even at 1 cubic metre,
that's only 35 buckets (per day), for 85tpd.
Easily done, with time for an extended lunch.