CSI/NAICS Codes

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Code	Description
210000	Fire Suppression
210100	Operation and Maintenance of Fire Suppression
210110	Oper & Main-Water-Based Fire Suppression Sys
211000	Water-Based Fire-Suppression Systems
211300	Fire-Suppression Sprinkler Systems
211313	Wet-Pipe Sprinkler Systems
211316	Dry-Pipe Sprinklers Systems
212*	Mining and Quarrying (except oil and gas)
21231*	Stone Mining and Quarrying
212312*	Crushed and Broken Limestone Mining and Quarrying
212321*	Construction Sand and Gravel Mining
213*	Support Activities for Mining
213113	Pumping or draining coal mines on a contract basis