The Notice of Intent says the proposed mining would last for 15 years, using cyanide to extract the gold.
The existing waste rock dump would be increased from 16Mt to 214Mt, and grow from 70ha to 200ha.
The dump is now 24m high but if mining goes ahead it will grow up to 170m high, according to the Notice of Intent.
Thickened tailings would be generated from the ore processing plant at a rate of 30,000 tonnes a day.
It is almost certain groundwater would be contaminated by acid metal drainage outside the mineral lease, the company said, but it said it would upgrade the ponds and tailings dams to limit this potential.
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