What government contracts are open under NAICS 333131?
As of October 9, 2026, RFPFinder lists no open government RFPs under NAICS 333131 (Mining Machinery and Equipment Manufacturing). New notices under this code appear here the day they post.
No open notices under 333131 right now.
Questions
What is NAICS 333131?
NAICS 333131 is the 2022 NAICS industry code for Mining Machinery and Equipment Manufacturing. The SBA small-business size standard for it is 900 employees.
Where do NAICS 333131 RFPs get posted?
Federal notices under NAICS 333131 get posted on SAM.gov, and state and local buyers post on their own procurement portals. RFPFinder collects both into this list, soonest deadline first.
Can I get alerts for NAICS 333131 RFPs?
Yes. Pro members ($39/mo) add NAICS codes to their fit profile, and matching notices are badged and alerted. The free daily digest follows one category or one state.