Sand, gravel, clay, and ceramic and refractory minerals mining and quarrying (NAICS 21232): average TRIR and DART
These are the 2024 private-industry incidence rates from the U.S. Bureau of Labor Statistics, per 100 full-time-equivalent workers. Prequalification forms often ask whether your TRIR and DART are at or below these numbers.
Other recordable cases: 0.5. "Not published" means the data does not meet BLS publication guidelines.
What this means for your prequal form
Worked example: a company in this industry with 100,000 hours worked in a year (about 50 full-time employees) would match the industry average at 0.8 recordable cases. With 400,000 hours (about 200 employees) the figure is 3.0.
TRIR = recordable cases × 200,000 ÷ hours worked. DART = (days-away cases + restricted/transfer cases) × 200,000 ÷ hours worked. Use your OSHA 300A totals for each calendar year.
Parent industry: Nonmetallic mineral mining and quarrying (NAICS 2123), TRC 1.7, DART 1.2.
Detailed industries under NAICS 21232
| NAICS | Industry | TRC | DART |
|---|---|---|---|
| 212321 | Construction sand and gravel mining | 1.5 | 1.0 |
| 212324 | Kaolin and ball clay mining | 1.3 | 0.9 |
| 212325 | Clay and ceramic and refractory minerals mining | 2.2 | 1.4 |
Source: BLS Survey of Occupational Injuries and Illnesses, Table 1 (2024). NAICS 2017 codes as published by BLS.