Truck-mixed concrete manufacturing · California
Hi-Grade Materials - Littlerock Ready Mix
Littlerock, CA · ~23 workers · 4 years of OSHA Injury Tracking Application data.
- C
- Average Safety Record
- 3.2
- Avg TCR
- 3.3
- Industry avg
- 0
- Fatalities
The verdict
Hi-Grade Materials - Littlerock Ready Mix runs at 98% of its industry's injury rate - about level with the typical Truck-mixed concrete manufacturing workplace, earning a grade C.
- C
- Average Safety Record
- 3.2
- avg TCR · per 100 workers
- 3.3
- industry benchmark (BLS)
- 3
- recordable injuries tracked
Grade compares Hi-Grade Materials - Littlerock Ready Mix's OSHA Total Case Rate of 3.2 to the Truck-mixed concrete manufacturing BLS benchmark of 3.3 (98% of benchmark) across 4 years of Form 300A filings (2016–2024). This reflects reported recordable injuries, not an independent safety inspection -- underreporting is a known limitation of employer self-recordkeeping.
Injury rate over time
Hi-Grade Materials - Littlerock Ready Mix's yearly Total Case Rate, against the 3.3 industry benchmark.
Where Hi-Grade Materials - Littlerock Ready Mix falls in its industry
1,465 Truck-mixed concrete manufactu establishmentsSafer than 59% of graded establishments in this industry, whose median TCR is 4.0.
Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #47 safest of 138 Truck-mixed concrete manufactu employers in California.
Trend analysis for Hi-Grade Materials - Littlerock Ready Mix
Between 2021 and 2024, Hi-Grade Materials - Littlerock Ready Mix's Total Case Rate held roughly steady from 0.0 to 8.1 recordable injuries per 100 full-time workers, a 0% change across 3 years of OSHA reporting.
The safest year on record was 2021, at a TCR of 0.0, while 2024 saw the highest rate, at 8.1, a spread of 8.1 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, Hi-Grade Materials - Littlerock Ready Mix recorded 3 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 3 injuries shown on this page for Hi-Grade Materials - Littlerock Ready Mix 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 327320 - Truck-mixed concrete manufacturing.
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.
0 DART incidents × 200,000 ÷ 49,265 hours worked = 0.00 DART
Methodology: 29 CFR 1904, OSHA Form 300A recordkeeping
Cross-Validating Context, Establishment vs Industry vs State
| Benchmark | TCR | Source |
|---|---|---|
| Hi-Grade Materials - Littlerock Ready Mix (this establishment) | 3.24 | OSHA ITA Form 300A, 4-year avg |
| Ready-mix concrete manufacturing and distributing industry avg | 3.30 | BLS IIF, NAICS 327320 |
| California state avg (all industries) | 5.64 | 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 Hi-Grade Materials - Littlerock Ready Mix 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: 2 reportable incidents · 2 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2023: 1 reportable incidents · 1 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2022: 0 reportable incidents · 0 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2021: 0 reportable incidents · 0 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 | 8.1 | 0.0 | 2 | 0 | 0 |
| 2023 | 4.8 | 4.8 | 1 | 0 | 0 |
| 2022 | 0.0 | 0.0 | 0 | 0 | 0 |
| 2021 | 0.0 | 0.0 | 0 | 0 | 0 |
What this grade means for you
Use this grade as a relative read on Hi-Grade Materials - Littlerock Ready Mix's reported OSHA injury record, strong versus its Truck-mixed concrete manufacturing peers, but not a guarantee about any single site today.
- At 98% of the Truck-mixed concrete manufacturing benchmark, Hi-Grade Materials - Littlerock Ready Mix 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 Truck-mixed concrete 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
What is Hi-Grade Materials - Littlerock Ready Mix's safety grade?
How many injuries has Hi-Grade Materials - Littlerock Ready Mix reported?
Similar Employers
Matched by safety record across the industry, by workforce size within California, and by nearby establishments in Littlerock - a different peer set than the category browse links below.
Similar TCR (~3.2)
Similar size (~23 workers)
Nearby in Littlerock
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.