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NFPA 499: Recommended Practice for the Classification of Combustible Dusts and of Hazardous (Classified) Locations for Electrical Installations in Chemical Process Areas
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Revision cycle information
Revision Cycle: Annual 2020
Next Edition: 2021
First Draft
Public Input Closing Date: 6/27/2018  
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Second Draft
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Motions Committee Report (NITMAM)
Motions Committee Report (NITMAM)
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Additional Committee Information

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