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I've done this. it's fun, and kinda weirdly exciting. 100ton jacks all slaved together thru a computerized manifold. jacks move slow, but they have a short throw, so the crews hustle. they move it up...block and wedge it up. lower the jacks and then lift the jacks to gain more elevation, and repeat.
I think it is all to improve clearances for military?
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poof! gone
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