I can't see how this is going to work. If the slab is separating here why do they think it won't separate at the next level since they will be drilling deeper holes in the underlying structure and fracturing it? Instead of 500,000 ponds they could be looking at 1mil+. I'd like to see THAT splash!

Seems to me it'd make more sense to blast the loose one free and let it drop. Sandstone is pretty brittle stuff from my experience.

Any of you geologists feel free to chime in.

https://grasswire.com/story/62/glen-canyon-dam

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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now

The structure of the underlying sedimentary layers might be vastly different. I didn't look very hard at the situation but ... A better solution might be to chip away at the lower edge in small bits and have a controlled removal.

Hmm, how about an RPG? Double the fun. Blow something up and watch a big ol' SPLOOOSH!!

__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now

Something odd about that story. If they had to close the boat ramp at Lee's Ferry, it's not close to Glen Canyon Dam as it is quite a few miles upstream from there. I also don't remember a canyon wall close enough to that boat ramp to cause problems.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

It's not the boat ramp. It's where the river-runners embark for white water raft trips.

__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now