“How long does it take to drill 1/2 mile down?”
The 6” water well I have took 1 1/2 days to go 285 feet down.
I would guess you need a 24” hole to get these boys out...a whole different rig altogether...
“A whole different rig,” the cast of Airplane! repeated.
This would be 2640 feet.
So all most 10 times as long.
Even a 6” hole would allow fresh air to be pumped in, and a power cord lowered. Food in, waste out. clothes.
game boys.
Yes a 24 inch borebole down to the immediate area of where the boys are would expose them to potentially dangerous rock debris raining down upon them.