Pneumatic mine dust sampling instrument
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United States of America Patent
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Aug 6, 2019
Grant Date -
Apr 27, 2017
app pub date -
Oct 24, 2016
filing date -
Oct 22, 2015
priority date (Note) -
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Abstract
Mine dust in underground coal mines is potentially explosive and must be sampled and tested for sufficient inert content regularly. The present invention comprises a pneumatic mine dust sampling instrument equipped with a specially designed nozzle arrangement that delivers a controlled pulse of air which entrains the mine dust, similar to the entrainment process that happens during a mine explosion. The entrained mine dust can then be collected and tested for compliance with applicable federal standards.
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