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Diving - Image 9

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Hydaulic jack holding back a bolder underwater.

Hydraulic jack bracing a large rock

As with the Acrow props used to support large rocks and bolders that can not be lifted away by the dive team, underwater hydraulic jacks are also used. These come in very handy when a large rock needs to be rolled clear of a work area. The jack is placed between two rocks and, with the help of Acrows, used to move them aside.

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