Ready-mix concrete manufacturing and distributing · California

Corona Plant #30

Corona, CA · ~39 workers · 8 years of OSHA Injury Tracking Application data.

C
Average Safety Record
3.5
Avg TCR
3.3
Industry avg
0
Fatalities
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The verdict

Corona Plant #30 runs at 107% of its industry's injury rate - about level with the typical Ready-mix concrete manufacturing and distributing workplace, earning a grade C.

Corona Plant #30: 3.5 TCR = 107% of Ready-mix concrete manufacturing and distributing BLS 3.3 · 8y Form 300A (see methodology below)

Corona Plant #30 safety composite

Corona Plant #30 scores strongest on dart rate (safer than 81% of same-industry peers) and weakest on fatalities (safer than 51%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

C

66/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 3.53 per 100 workers

Safer than 62% of industry peers

DART rate
B 0 per 100 workers

Safer than 81% of industry peers

Fatalities
D 0

Safer than 51% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

TCR Δ

−7.0

2017→2024

Corona Plant #30 injury rate improved

Corona Plant #30's TCR fell 7.0 from 7.0 in 2017 to 0.0 in 2024. Peak filing year was 2021 at 8.9 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2017=7.0 · 2018=3.9 · 2019=1.8 · 2020=1.6 · 2021=8.9 · 2022=0.0 · 2023=5.0 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 327320 · Corona, CA ABOVE-IND · SMALL

Grade C · TCR 3.5 · 107% of ind

  • DART 0.0 DART
  • RANK #42/128
  • PHOTO Jacksonville Plant
  • BOOK 8y book
  • INJ 14 inj
  • SIZE ~39 FTE

Nearest TCR peer: Jacksonville Plant (0.0 TCR gap)

Read with this employer → · Industry book → · California employers → · Look up another →

Corona Plant #30 in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Corona Plant #30 averages 3.5 TCR (107% of the Ready-mix concrete manufacturing and distributing BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Corona Plant #30 TCR series: 2017=7 · 2018=3.9 · 2019=1.8 · 2020=1.6 · 2021=8.9 · 2022=0 · 2023=5 · 2024=0 · BLS 3.3

Where Corona Plant #30 falls in its industry

1,316 Ready-mix concrete manufacturi establishments

Safer than 62% of graded establishments in this industry, whose median TCR is 4.5.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #42 safest of 128 Ready-mix concrete manufacturi employers in California.

Corona Plant #30 (39 employees, TCR 3.5) among 29 same-industry peers, split at the industry median of 33 employees and a TCR of 4.5 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 0100200300400500 051015 Average employees Total Case Rate Corona Plant #30
Corona Plant #30 (39 employees, TCR 3.5) among 29 same-industry peers, split at the industry median of 33 employees and a TCR of 4.5

Corona Plant #30 has more employees than the Ready-mix concrete manufacturing and dis median and a lower injury rate than the industry's median TCR of 4.5. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year TCR DART Injuries Illnesses Fatalities
2024 0.0 0.0 0 0 0
2023 5.0 5.0 2 0 0
2022 0.0 0.0 0 0 0
2021 8.9 4.5 4 0 0
2020 1.6 1.6 1 0 0
2019 1.8 1.8 1 0 0
2018 3.9 3.9 2 0 0
2017 7.0 0.0 4 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

327320 · CA · Corona

1,316 Ready-mix concrete manufacturing and distributing employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 409 employers in Corona, CA · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR Jacksonville Plant 3.5 TCR
NAICS-TCR Espanola Transit Mix, LLC 3.5 TCR
NAICS-TCR 23006 3.5 TCR
NAICS-TCR MCRM Ready Mix Delivery North 3.5 TCR
STATE-SIZE San Felipe Farms 39 FTE
STATE-SIZE Schreiner Brothers Farms 39 FTE
STATE-SIZE TLC Custom Farming Company LLC 39 FTE
STATE-SIZE Sonoma Valley Vineyards 39 FTE
CITY-NEAR Monster Energy Company 2535 Anselmo Dr 2,572 FTE
CITY-NEAR Monster Energy Company 2,388 FTE
CITY-NEAR Monster Energy Company - Anselmo Dr, Corona 2,335 FTE
CITY-NEAR California Department of Transportation Facility 289 1,587 FTE
NAT-TCR Acadiana Bottling Company, Inc. 3.5 TCR
NAT-TCR Fat Head's Brewing, LP 3.5 TCR
NAT-TCR Shop Rite of Old Bridge 3.5 TCR
NAT-TCR Cheshire Store 3.5 TCR
NAT-SIZE Indianapolis Private Fleet in 39 FTE
NAT-SIZE MAPEI Dalton #2 39 FTE
NAT-SIZE Administrative Offices 39 FTE
NAT-SIZE DDRC Weiland Center 39 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2024, 2023, 2022, 2021, 2020, 2019, 2018, 2017. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.