[Mariner]

They are placing 1,200 tons per HOUR and have been at it for about 50 hours.

They probably have another 50 hours before the lake sees the heaviest inflows. The crews will keep working as long as the winds allow.

Best case 120,000 tons with a concrete veneer. Not much given the scale.

[Rebelbase]

“They are placing 1,200 tons per HOUR”

How is that possible using Helicopters that carry rock in bags that are rated at a one or two tons?

[digger48]

Best case 120,000 tons with a concrete veneer. Not much given the scale.

Exactly. Those are some big holes.