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Safety Concrete Crusher

Compliance and Safety for Silica. If you work in a profession that involves crushing asphalt, concrete or rocks e.g. mining, milling or construction, youre probably aware of OSHAs tightening Permissible Exposure Limit PEL for respirable crystalline silica Table 1 of OSHA Standard 29 CFR 1926.1153.The new standard 50 micrograms per cubic meter with an active level of 25 ...

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