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NAICS 333131

333131: Mining Machinery and Equipment Manufacturing

Sector 31-33, Manufacturing. Subsector 333, Machinery Manufacturing. The public award record for this code: who buys it, who won it, what it went for, what recompetes soon.

Live from the data

Live numbers for NAICS 333131 appear here once the data engine has loaded award history. The public sources are being read now.

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Open notices

Open right now under NAICS 333131

2 open notices on SAM.gov. The newest 2:

PostedNoticeBuyerNAICSSet-asideDue
May 26, 2026Road GraderCombined Synopsis/SolicitationW6QM MICC-FT DRUM333131SBAJun 2, 2026
Apr 15, 2026SHAKER TABLECombined Synopsis/SolicitationW6QM MICC-FT DRUM333131SBAApr 23, 2026
From the SAM.gov opportunities API, refreshed daily. Each title opens the original notice on SAM.gov. Members see every open notice with the buyer's award history next to it.

Where this code sits

NAICS 333131 is a six-digit national industry in the 2022 North American Industry Classification System. It sits under industry group 3331 (Agriculture, Construction, and Mining Machinery Manufacturing), NAICS industry 33313 (Mining and Oil and Gas Field Machinery Manufacturing), in subsector 333 (Machinery Manufacturing) of sector 31-33 (Manufacturing).

Federal buyers assign one NAICS code to each award and each notice. The code describes the kind of business the buyer expects to perform the work, not the item itself; the item is described by the PSC code. The numbers above come from awards and notices carrying this exact code. Related work often sits in the neighboring codes listed below, so watch the neighbors too.

The official definition, with what the code includes and excludes, is on the Census NAICS page linked at the bottom.

How to use this page

Who bought it ranks contracting offices by what they obligated under this code. Who won it ranks vendors after names are resolved to one record each. What it went for shows award size bands; the median describes a typical award better than the average. What recompetes soon lists awards whose period of performance ends inside twelve months.

A code with nothing on record yet says so. History loads one subsector and fiscal year at a time, so quiet codes and older years fill in last. Members see the individual awards and notices behind every number, buyer and incumbent profiles, alerts and briefs.

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