| (right) existing pond material
prior to dredging.
Works involved the removal of 766,000m3 of material from the first
pond (to allow for structural fill to be placed) and pumping into
a holding pond. The holding pond was then dredged to remove the
material placed from the first pond (along with material already
in the pond before dredging commenced - 1,017,000m3 in total)
and pumped to a final deposition pond.
Even though the project called for clean, smooth pond bases for
the structural fill to be placed upon, the nature of the pumped
material allowed for high production rates to be achieved with
the 14" dredges.
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