327410

Analysis

NAICS 327410 is the 2022 national industry for lime manufacturing, part of 32741 (Lime Manufacturing). Census lists 8 example activities under it in the official index.

Between 2018 and 2023 the number of establishments fell 15% and employment fell 9%. 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.

County Business Patterns counts 93 US establishments in this code in 2023, employing 4,068 people at an average annual payroll of $78,004 per employee (66th percentile of national industries). 22% of the establishments have fewer than five employees, which points to larger operations.

Its index entries, the activities Census uses to assign businesses to this code, include agricultural lime manufacturing, calcium hydroxide (i.e., hydrated lime) manufacturing, calcium oxide (i.e., quicklime) manufacturing and dolomite, dead-burned, manufacturing, among 8 in all.

Its goods appear in 4 statistical lines of the US tariff schedule, mostly under headings 2522 (quicklime, slaked lime and hydraulic lime, other than…) and 2518 (dolomite, whether or not calcined or sintered, including…). That link is how import data is matched to domestic producers, for example in trade-remedy cases.

For example, manufacturing dolomite refractories are classified in 327120 (Clay Building Material and Refractories Manufacturing) instead.