Verbessert das Sprengverhalten – Kostenreduzierung bei der Nacharbeit

    Deutschland Ltd.

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 44145 Dortmund

 Fon: 0231 4461693
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 (aus Deutschland)

 Internationale Anrufe:
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   Patent # 5,936,187

Stemming Performance Study Video

This video is of our Stemming Performance Study (Field Study 3) conducted in September 2003 by DBA Consulting.

As you view the video, please pay particular attention to the difference in stemming retention between the left side of the shot vs. the right side of the shot.

Left side of video

  • 39ms = Average retention time of crushed rock, stemmed holes 
    (no VARI-STEM)

Right side of video

  • 120ms = Average retention time of VARI-STEM with crushed rock
  • 145ms = Average retention time of VARI-STEM with sand consistent drill cuttings

Also please note the more pronounced, deeper Energy Trough. The trough extends deeper towards the toe of the wall on the right side of the shot where our VARI-STEM Plugs were used.  A deeper energy trough results in better diggabilty.

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Click anywhere in the black box or on the PLAY arrow below to start the video.