Aparatos para detección y medida de metano hasta el 5% para uso en minería subterránea.
APPARATUS FOR THE DETECTION AND MEASUREMENT OF METHANE TO 5% IN UNDERGROUND MINES.
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29.260.20 / Electrical apparatus for explosive atmospheres
73.020 / Mining and quarrying
CTN 22/SC 1 - Mineral raw materials
Cancel: UNE 22301:1964
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