Aluminum plate made in integrated secondary smelting and flat rolling mills · Washington
Kaiser Aluminum - Trentwood
Spokane Valley, WA · ~851 workers · 4 years of OSHA Injury Tracking Application data.
- B
- Good Safety Record
- 2.4
- Avg TCR
- 3.3
- Industry avg
- 0
- Fatalities
The verdict
Kaiser Aluminum - Trentwood runs at 73% of its industry's injury rate - safer than the typical Aluminum plate made in integrated secondary smelting and flat rolling mills workplace, earning a grade B.
- B
- Good Safety Record
- 2.4
- avg TCR · per 100 workers
- 3.3
- industry benchmark (BLS)
- 76
- recordable injuries tracked
Grade compares Kaiser Aluminum - Trentwood's OSHA Total Case Rate of 2.4 to the Aluminum plate made in integrated secondary smelting and flat rolling mills BLS benchmark of 3.3 (73% of benchmark) across 4 years of Form 300A filings (2016–2024). <a href="/methodology">See methodology</a> for reporting-limitation caveats.
Injury rate over time
Kaiser Aluminum - Trentwood's yearly Total Case Rate, against the 3.3 industry benchmark.
Where Kaiser Aluminum - Trentwood falls in its industry
71 Aluminum plate made in integra establishmentsSafer than 45% of graded establishments in this industry, whose median TCR is 2.3.
Trend analysis for Kaiser Aluminum - Trentwood
Between 2019 and 2024, Kaiser Aluminum - Trentwood's Total Case Rate improved from 3.3 to 1.4 recordable injuries per 100 full-time workers, a 60% decrease across 5 years of OSHA reporting.
The safest year on record was 2024, at a TCR of 1.4, while 2019 saw the highest rate, at 3.3, a spread of 2.0 points between the best and worst reporting years. That's a wide swing relative to the establishment's overall rate, worth checking the year-by-year table below for whether a single severe year is driving the average, rather than a sustained trend.
Summed across those 4 reporting years, Kaiser Aluminum - Trentwood recorded 76 total injuries and illnesses, with no fatalities reported in any of those years. Readers comparing establishments should weigh the 4-year trend above alongside establishment size, since a larger workforce naturally accumulates more raw incidents even at a lower per-100-worker rate.
Verify This Employer with OSHA
The 76 injuries, 5 illnesses shown on this page for Kaiser Aluminum - Trentwood are sourced from its own 4 years of mandatory OSHA Form 300A summaries. Cross-check the underlying establishment record directly against the federal source, name, NAICS classification, recordable case totals, and inspection history are all searchable on OSHA's Establishment-Specific Injury and Illness Data system.
Verify on OSHA Establishment SearchSource: U.S. Department of Labor, OSHA Establishment-Specific Injury and Illness Data. NAICS 331315 - Aluminum plate made in integrated secondary smelting and flat rolling mills.
DART Rate, Transparent Calculation (2024)
What is the DART rate formula?
DART (Days Away, Restricted, or Transferred) is computed by OSHA as incidents × 200,000 ÷ hours worked. The 200,000-hour denominator equals roughly 100 full-time workers, which lets establishments of very different sizes be compared directly.
8 DART incidents × 200,000 ÷ 1,920,435 hours worked = 0.83 DART
Methodology: 29 CFR 1904, OSHA Form 300A recordkeeping
Cross-Validating Context, Establishment vs Industry vs State
| Benchmark | TCR | Source |
|---|---|---|
| Kaiser Aluminum - Trentwood (this establishment) | 2.41 | OSHA ITA Form 300A, 4-year avg |
| Aluminum plate made by continuous casting purchased aluminum industry avg | 3.30 | BLS IIF, NAICS 331315 |
| Washington state avg (all industries) | 6.20 | OSHA ITA, state-level rollup |
Industry benchmarks: Bureau of Labor Statistics, Injuries, Illnesses, and Fatalities (IIF) program
Reportable Incident Timeline
Year-by-year reportable incidents (recordable injuries + illnesses + fatalities) submitted by Kaiser Aluminum - Trentwood to OSHA's Injury Tracking Application. Each row anchors to OSHA's inspection records search where you can pull the underlying inspection case numbers and citations for that establishment-year.
- 2024: 13 reportable incidents · 12 injuries, 1 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2022: 20 reportable incidents · 19 injuries, 1 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2021: 19 reportable incidents · 16 injuries, 3 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2019: 29 reportable incidents · 29 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
Source: OSHA Inspection Information System (IMIS) - inspection case-number records
Year-by-Year Safety Data
| Year | TCR | DART | Injuries | Illnesses | Fatalities |
|---|---|---|---|---|---|
| 2024 | 1.4 | 0.8 | 12 | 1 | 0 |
| 2022 | 2.4 | 1.4 | 19 | 1 | 0 |
| 2021 | 2.6 | 1.5 | 16 | 3 | 0 |
| 2019 | 3.3 | 2.4 | 29 | 0 | 0 |
What this grade means for you
Use this grade as a relative read on Kaiser Aluminum - Trentwood's reported OSHA injury record, strong versus its Aluminum plate made in integrated secondary smelting and flat rolling mills peers, but not a guarantee about any single site today.
- At 73% of the Aluminum plate made in integrated secondary smelting and flat rolling mills benchmark, Kaiser Aluminum - Trentwood reports fewer injuries than typical peers, still worth asking how safety is managed day to day. Know your rights
- Judge this record against the wider Aluminum plate made in integrated secondary smelting and flat rolling mills sector, where injury rates vary widely, before comparing it in isolation. See the industry
- Grades reflect 2016–2024 filings; check the latest establishment record straight from OSHA, or look up a different employer. Look up another
Safety grades reflect employers' self-reported OSHA Form 300A filings from 2016 to 2024 and can lag current conditions. A grade is not a guarantee that any specific workplace is safe or unsafe today. See our methodology and disclaimer.
Frequently Asked Questions
What is Kaiser Aluminum - Trentwood's safety grade?
How many injuries has Kaiser Aluminum - Trentwood reported?
Similar Employers
Matched by safety record across the industry, by workforce size within Washington, and by nearby establishments in Spokane Valley - a different peer set than the category browse links below.
Similar TCR (~2.4)
Similar size (~851 workers)
Read our methodology - how this data is sourced, computed, and verified.
Every figure and grade on PlainSafetyScore is computed directly from OSHA's published Injury Tracking Application data and BLS industry benchmarks, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these safety grades, or report a data error. Data current as of 2016-2024 OSHA ITA release.