This Sub-class includes extraction of building and/or monumental stone from the earth. Units in this Sub-class are primarily engaged in one or more of the following: •quarrying, rough trimming and/or sawing of monumental and/or building stone (e.g. marble, granite, sandstone, slate) •quarrying, crushing and/or breaking of limestone •mining of gypsum, anhydrite, chalk and/or uncalcined dolomite •extraction and/or dredging of gravel •breaking and/or crushing of stone and/or gravel
•quarrying of sand and clay, see 08102 •mining of chemical and fertiliser minerals, see 08900 •production of calcined dolomite, see 23940 •shaping, pulverising, grinding, and/or other treatment of stone and/or gravel not performed in conjunction with extraction or quarrying activities, see 2399 •cutting, shaping and finishing of stone outside quarries, see 23960