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sampling instrument

A device to determine the methane or dust concentration in mine air to assess safety and health. Instruments are designed to sample instantaneously, or over short periods, or to operate continuously. For methane, warning is required whenever the percentage approaches a danger figure. Dust dangers are not momentary peak concentrations but the bulk quantity of dust breathed over a period. The term may also be applied to soil-, coal-, or mineral-sampling devices of an instrumental nature.

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  • ed.young
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