327992

Analysis

NAICS 327992 is the 2022 national industry for ground or treated mineral and earth manufacturing, part of 32799 (All Other Nonmetallic Mineral Product Manufacturing). Census lists 22 example activities under it in the official index.

County Business Patterns counts 275 US establishments in this code in 2023, employing 10,279 people at an average annual payroll of $85,159 per employee (74th percentile of national industries). 27% of the establishments have fewer than five employees, which is close to the national mix.

Between 2018 and 2023 the number of establishments grew 10% and employment rose 25%. The 2018 count used NAICS 2017, so part of a large move can come from codes being redefined rather than from businesses opening or closing.

Its index entries, the activities Census uses to assign businesses to this code, include barite processing beyond beneficiation, barium processing beyond beneficiation, blast furnace slag processing and desiccants, activated clay, manufacturing, among 22 in all.

Its goods appear in 10 statistical lines of the US tariff schedule, mostly under headings 2519 (natural magnesium carbonate (magnesite); fused magnesia…), 2504 (natural graphite) and 2525 (mica, including splittings; mica waste). That link is how import data is matched to domestic producers, for example in trade-remedy cases.

For example, crushing, grinding, pulverizing, washing, screening, sizing, or otherwise beneficiating mined clays, ceramics and refractory, and other miscellaneous nonmetallic minerals are classified in 2123 (Nonmetallic Mineral Mining and Quarrying) instead.