Detector, Gas
Object number93.211.2
Manufacturer
Mine Safety Appliances Company
Date1963-1969
Mediumplastic, rubber, metal
Credit LineGift of Department of Labor and Mine Safety
DescriptionMethane detector. Green plastic case with green rubber bulb. Round meter shows percentage of methane in air sample. Embossed maker name on front of case. Instructions for use on back. Braided cloth carrying strap. Instructions included in plastic resealable bag.Dimensions8 x 3 in. (20.3 x 7.6 cm)Inscriptions"USBM" scratched into bottom front of case.
MarksEmbossed words on front of case: "MSA CHECK SAMPLE".
On back: "methane detector indicating type P-2 approval No. 8C-15".
Label TextDetectors were used to measure the presence of methane gas in a mine. The 1930s detector has two knobs on the side, one for gathering the air sample and one for opening the battery circuit inside the detector. The air would then pass over a heated filament to register a reading. The 1960s model displays methane percentage on a round meter. The gas mask dates from the 1940s, and the safety helmet from the 1970s. Used by US Bureau of Mines employees in the aftermath of mine disasters.
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