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respirable

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Cutting these materials produces airborne dust containing very fine respirable crystalline silica (RCS) particles. en.wikipedia.org

Construction workers who sand drywall joint compound are often exposed to high concentrations of dusts, talc, calcite, mica, gypsum, and in some cases, respirable silica. en.wikipedia.org

The gaseous oxide of azote (the laughing gas) is perfectly respirable when pure. en.wikipedia.org

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