Official classification context
Industry overview This class comprises establishments principally engaged in crushing, grinding, and other processes concerning mica, clay, feldspar, kaolin, garnet, pumice, quartz, bentonite, limestone and other stones, rock, and minerals. However, establishments principally engaged in manufacturing garnet and silica sand flint for grinding are classified under Group 217 [2171].
Major group context CLAY PRODUCTS This Major group comprises establishments engaged in manufacturing plate (flat) glass and other glass products, cement and its products, clay products for construction, ceramics, refractory products, carbon and graphite products, ename l-covered iron products, abrasive grains, aggregates, stone products, gypsum products, lime products. Group Class Number Number