PSIC 2019 · Group
081
Quarrying of stone, sand and clay
This group involves the extraction and processing of various natural materials such as stone, sand, and clay for construction and industrial purposes.
Includes
- Quarrying, rough trimming, and sawing of monumental and building stone such as marble, granite, and sandstone
- Quarrying, crushing, and breaking of limestone
- Breaking and crushing of stone
- Mining of clays, refractory clays, and kaolin
- Quarrying of sand; breaking and crushing of gravel; extraction and dredging of sand for construction and gravel
- Extraction and dredging of industrial sand
- Mining of gypsum and anhydrite
- Mining of chalk and uncalcined dolomite