As of December 6, 2024, NFPA 660 Standard for Combustible Dusts and Particulate Solids is the presiding standard for combustible dust hazard prevention and safety information. It is a consolidated standard, which combines information from existing standards NFPA 61, NFPA 484, NFPA 652, NFPA 654, NFPA 655, and NFPA 664.
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