Yes water will come in.. Happens all the time.. It happens on...

Yes water will come in.. Happens all the time.. It happens on Cockatoo now. They have been mining below sea level since the 60's.

That is why they have the settlement pond, the water is pumped into it to decant and is then discharged to the ocean

Woodie Woodie pump 60 gigalitres of water each year. The pumps pump out 800 litres a second.

Water management is nothing new.

Water in Koolan island pit after BHP left. 10 Billion litres in the pit...

Same pit de-watered

Cheers