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hurricane air stemmer

A mechanical device for the rapid stemming of shotholes. It consists of a sand funnel connected by a T-piece to the charge tube, one end of which is provided with a valve and fittings to the compressed air column. The funnel is filled with sand, which is held uppermost, and the charge tube is inserted into the shothole. The sand is injected by the compressed air, and the tube is gradually withdrawn as the hole is being filled.

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  • ed.young
  • (Milwaukee, United States)

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