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I'm pretty sure the batter holes for the pit wall design were...

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buzzard08

334 Posts.

71

12/12/23

12:21

Post #: 71402896
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Originally posted by Blue swims: ↑

Helios critical factors for pit design are around rock competency ,ore deposit shape.Here host rock is mafic basalt and silica dominant pegmatite- both have very high competency- so would allow a steeper pit slope than 45 degrees on the AZM boundary .With some benches (see pic from Kalgoorlie Super Pit) they could get even steeper.
The other issue is haulage trucks. The FWZ rising to surface to the north would allow a much flatter slope for haulage ( truck gears).
The long shape of the ore body further improves mining and haulage metrics.It’s not that deep.
A rough shape could include something like this below.

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I'm pretty sure the batter holes for the pit wall design were drilled at 70degrees. I worked there for a considerable time in the late 90's.

WR1 Price at posting: 95.0¢ Sentiment: Buy Disclosure: Held
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