List of activities classified inside the UK SIC Code 28921
- Winding machine for mining (manufacture)
- Road ripper for mining (manufacture)
- Riser connector apparatus (manufacture)
- Ranging drum shearer for mining (manufacture)
- Production riser tie-back equipment (manufacture)
- Production riser tensioners (manufacture)
- Powered roof support for mining (manufacture)
- Pit bottom machinery (manufacture)
- Petroleum drilling equipment (manufacture)
- Mudline suspension and tie-back equipment (manufacture)
- Motion compensation equipment for oil drilling rigs (manufacture)
- Moles for mining (manufacture)
- Rock cutting machinery (manufacture)
- Rock drilling machinery (manufacture)
- Wellheads (manufacture)
- Wellhead running tools (manufacture)
- Well drilling equipment (manufacture)
- Tunnelling machine for mining (manufacture)
- Track laying tractors and other tractors used in mining (manufacture)
- Stowing machine for mining (manufacture)
- Skip plant for mining (manufacture)
- Sinking machine for mining (manufacture)
- Rotary tables (manufacture)
- Roof support (hydraulic) (manufacture)
- Rocker shovel for mining (manufacture)
- Mining tool (bit) (manufacture)
- Mining machinery (manufacture)
- Minerals treatment machinery (manufacture)
- Cutting machinery for coal or rock (manufacture)
- Crushing machine for mining (manufacture)
- Conveyor for underground mining (manufacture)
- Continuous miner (manufacture)
- Coal preparation plant (manufacture)
- Coal plough (manufacture)
- Coal cutter (manufacture)
- Casing hangars (manufacture)
- Cage plant for mining (manufacture)
- Bridge plugs (manufacture)
- Borers (mining machinery) (manufacture)
- Dinting machine for mining (manufacture)
- Drill bits for well drilling (manufacture)
- Mineral dressing plant (manufacture)
- Mineral cutter (manufacture)
- Machinery for treating minerals by screening, sorting, separating, washing, crushing (manufacture)
- Loader for mining (manufacture)
- Liner hanger equipment (manufacture)
- Iron roughnecks (manufacture)
- Heading machine for mining (manufacture)
- Hauling engine for mining (stationary) (manufacture)
- Elevators with continuous action for underground use (manufacture)
- Earth boring machine (manufacture)
- Drilling jars for mining (manufacture)
- Blow-out prevention apparatus (manufacture)