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The following Product Service Codes (PSCs) are commonly associated with NAICS 212220, Gold Ore and Silver Ore Mining

PSC R499 Support—Professional: Other

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Federal Category 2.3: Professional Services — Management Advisory Services
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Coming Soon @BetterData
This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.

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Coming Soon @VoteUNSPSC @UNSPSC2021 @BetterData
Industry standards are so, like, totally industrial and standard. We get it. But, maybe let's just try it this one time?