3532 - Mining Machinery and Equipment, except Oil and Gas Field Machinery and Equipment
Establishments primarily engaged in manufacturing heavy machinery an equipment used by the mining industries, such as coal breakers, mine cars, mineral cleaning machinery, concentration machinery, core drills, coal cutters, portable rock drills, and rock crushing machinery. …
Examples: Amalgamators (metallurgical and mining machinery), Auger mining equipment, Bits, rock: except oil and gas field tools,
