how to dig a 24" dia 15' deep hole

[billwmeyer]

I can only think of 2 alternatives. c-4 or a very big gopher.

Bill

[Tom Slick]

D6 CAT and lots of backfilling. not very efficient but it would be fun!

[Stytooner]

Why does it have to go that deep?
I think you could do the same thing with a 4 or 5 foot deep trench 24' long. Just keep it all below any possible frost line and you should be good.

[pierhogunn]

the reason for the depth is to contain any changes to the land within the footprint of the home

[Mr__Bill]

the reason for the depth is to contain any changes to the land within the footprint of the home

I really hope the house hasn't been built yet, I can't help but see this drilling rig in the middle of the living room with a woman saying... let me move the rug first!


Bill

[RAV2]

You could try the wet vac trick - using it to excavate the dirt up. You could use a long pole to guide the hose.

First big rock and you are done!

[gjat]

the reason for the depth is to contain any changes to the land within the footprint of the home

That being the case, I'd rent a mini-excavator to dig slits. You should be able to get a good 6' to 8' depth depending on the soil, machine, and operator.