NAICS 333131 — Mining Machinery and Equipment Manufacturing 
BEA sector: Mining and oil and gas field machinery manufacturing
Activity: Amalgamators (i.e., metallurgical and mining machinery) manufacturing
Activity: Augers, mining-type, manufacturing
Activity: Bits, rock drill, underground mining-type, manufacturing
Activity: Breakers, coal, manufacturing
Activity: Cars, mining, manufacturing
Activity: Cleaning machinery, mining-type, manufacturing
Activity: Coal breakers, cutters, and pulverizers manufacturing
Activity: Concentration machinery, mining-type, manufacturing
Activity: Core drills, underground mining-type, manufacturing
Activity: Crushing machinery, stationary, manufacturing
Activity: Cutters, coal, manufacturing
Activity: Drilling equipment, underground mining-type, manufacturing
Activity: Drills, core, underground mining-type, manufacturing
Activity: Drills, rock, underground mining-type, manufacturing
Activity: Dumpers, mining car, manufacturing
Activity: Feeders, mineral beneficiating-type, manufacturing
Activity: Flotation machinery, mining-type, manufacturing
Activity: Hammer mill machinery (i.e., rock and ore crushing machines), stationary, manufacturing
Activity: Loading machines, underground mining, manufacturing
Activity: Mineral processing and beneficiating machinery manufacturing
Activity: Mining cars manufacturing
Activity: Ore crushing, washing, screening, and loading machinery manufacturing
Activity: Pellet mills machinery, mining-type, manufacturing
Activity: Quarrying machinery and equipment manufacturing
Activity: Rock crushing machinery, stationary, manufacturing
Activity: Rock drills, underground mining-type, manufacturing
Activity: Scraper loaders, underground mining-type, manufacturing
Activity: Screening machinery, stationary, manufacturing
Activity: Sedimentary mineral machinery manufacturing
Activity: Sieves and screening equipment, mineral beneficiating, manufacturing
Activity: Stone beneficiating machinery manufacturing
Activity: Underground mining machinery manufacturing
Activity: Washers, aggregate and sand, stationary, manufacturing