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Dynamic compaction is a ground improvement technique used to increase the density of loose granular soils, waste, and fills by repeatedly dropping a heavy weight from a significant height (10–40 meters) onto the ground surface.

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This could come in handy. The "Ranger Roll" is an emergency, tactical technique used to lift an unconscious, injured, or "dead-weight" casualty off the ground and onto a rescuer's back for transport to safety. It is designed to be a rapid, efficient method, often demonstrated by former US Army Rangers to enable a single person to move a casualty who may be heavier than them.

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