Guided missile and space vehicle engine manufacturing · Utah
Northrop Grumman/Propulsion Systems - Promontory
BRIGHAM CITY, UT · ~1,607 workers · 4 years of OSHA Injury Tracking Application data.
- A
- Excellent Safety Record
- 0.7
- Avg TCR
- 3.3
- Industry avg
- 0
- Fatalities
The verdict
Northrop Grumman/Propulsion Systems - Promontory runs at 22% of its industry's injury rate - far safer than the typical Guided missile and space vehicle engine manufacturing workplace, earning a grade A.
- A
- Excellent Safety Record
- 0.7
- avg TCR · per 100 workers
- 3.3
- industry benchmark (BLS)
- 33
- recordable injuries tracked
Grade compares Northrop Grumman/Propulsion Systems - Promontory's OSHA Total Case Rate to the BLS industry benchmark across 4 years of Form 300A filings (2016–2024).
Injury rate over time
Northrop Grumman/Propulsion Systems - Promontory's yearly Total Case Rate, against the 3.3 industry benchmark.
Total Case Rate (recordable injuries per 100 full-time workers), OSHA ITA Form 300A. Industry benchmark: BLS IIF, NAICS 336415.
Where Northrop Grumman/Propulsion Systems - Promontory falls in its industry
56 Guided missile and space vehic establishmentsSafer than 57% of graded establishments in this industry, whose median TCR is 0.8.
Northrop Grumman/Propulsion Systems - Promontory has an average TCR of 0.7, which is 22% of the industry average (3.3) for Guided missile and space vehicle engine manufacturing. This is significantly better than average.
Safety Insights for Northrop Grumman/Propulsion Systems - Promontory
Northrop Grumman/Propulsion Systems - Promontory operates an establishment with approximately 1,607 full-time equivalent workers in BRIGHAM CITY, UT, classified under the Guided missile and space vehicle engine manufacturing industry (NAICS 336415). Across 4 years of mandatory OSHA Injury Tracking Application (ITA) reporting, this employer has accumulated 33 recordable injuries, 15 occupational illnesses, and 0 workplace fatalities. The average Total Case Rate (TCR) of 0.7 injuries per 100 full-time workers per year provides the anchor metric for the A letter grade (Excellent Safety Record).
Benchmarked against the Bureau of Labor Statistics industry average of 3.3 for Guided missile and space vehicle engine manufacturing, Northrop Grumman/Propulsion Systems - Promontory's workforce experiences 22% of the typical injury burden. This ratio matters because TCR already normalizes for hours worked, a 200,000-hour exposure base equals roughly 100 full-time workers, so establishments with very different headcounts can be compared directly. A TCR below the benchmark signals that controls, training, or automation may be outperforming peers.
Multi-year trend analysis is the single most reliable signal here: a one-year spike could reflect a single severe event, whereas sustained elevation across 4 reporting cycles points to systemic hazard exposure. Readers evaluating Northrop Grumman/Propulsion Systems - Promontory as an employer, contractor, investment, or regulatory target should examine the yearly DART rate (days away, restricted, or transferred), the fatality count of 0, and any year-over-year deterioration shown in the table below. All figures come directly from employer-submitted OSHA Form 300A summaries, there is no modeling, estimation, or third-party adjustment layered on top of the government data.
Verify This Employer with OSHA
All injury, illness, and fatality figures on this page are sourced from Northrop Grumman/Propulsion Systems - Promontory's own 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 336415 - Guided missile and space vehicle engine manufacturing.
DART Rate, Transparent Calculation (2022)
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 ÷ 3,695,119 hours worked = 0.43 DART
Methodology: 29 CFR 1904, OSHA Form 300A recordkeeping
Cross-Validating Context, Establishment vs Industry vs State
| Benchmark | TCR | Source |
|---|---|---|
| Northrop Grumman/Propulsion Systems - Promontory (this establishment) | 0.73 | OSHA ITA Form 300A, 4-year avg |
| Aerospace industry avg | 3.30 | BLS IIF, NAICS 336415 |
| Utah state avg (all industries) | 4.77 | 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 Northrop Grumman/Propulsion Systems - Promontory 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.
- 2022: 16 reportable incidents · 10 injuries, 6 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2020: 23 reportable incidents · 14 injuries, 9 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2019: 2 reportable incidents · 2 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2018: 7 reportable incidents · 7 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 |
|---|---|---|---|---|---|
| 2022 | 0.9 | 0.4 | 10 | 6 | 0 |
| 2020 | 1.4 | 0.7 | 14 | 9 | 0 |
| 2019 | 0.1 | 0.1 | 2 | 0 | 0 |
| 2018 | 0.5 | 0.2 | 7 | 0 | 0 |
What this grade means for you
Use this grade as a relative read on Northrop Grumman/Propulsion Systems - Promontory's reported OSHA injury record, strong versus its Guided missile and space vehicle engine manufacturing peers, but not a guarantee about any single site today.
- At 22% of the Guided missile and space vehicle engine manufacturing benchmark, Northrop Grumman/Propulsion Systems - Promontory 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 Guided missile and space vehicle engine manufacturing 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
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