2001 - Volume #25, Issue #4, Page #20
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Air-Power Shovel Digs Fast With Air
If you've ever pointed a jet nozzle on an air hose at the ground, then you've got the basic idea behind the new AIR-SPADEĢ from Concept Engineering Group, Inc. (CEG), Verona, Pennsylvania.
The air-powered shovel uses a supersonic air jet nozzle to dig holes. It's based on the design of nozzles used in rocket pr..........


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2001 - Volume #25, Issue #4