Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining …
Summary Posted 7/18/24, 12:30 AM The NAICS category 21232 covers Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining and Quarrying. This includes mining, quarrying, and processing activities for various aggregate materials like sand, gravel, crushed stone, clay, and other mineral products used in construction and industrial …
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