How do you know it cost more money to drill holes for freezing at deeper depth other than the obvious time is takes to bring the materials needed? It clearly states in that article that the pipes for freezing do not have to be deep into the wall where your freezing. Do you have proof of your extra costs at depth statement?
Don’t get me wrong, I’m not suggesting that freezing does not cost more in the long run but I just do not see how it could cost more money to drill a 10 foot hole into a mine shaft wall at 2200 feet below the surface than at 500 ft below surface.
The post is counter to my post implying the freezing may cost more than previously thought. I agree with P.M. & think the freeze process is a great solution. Bob
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