Clay refractories (e.g., mortar, brick, tile, block) manufacturing · California

Westlake Royal Roofing LLC-Corona

Corona, CA · ~57 workers · 3 years of OSHA Injury Tracking Application data.

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

Westlake Royal Roofing LLC-Corona runs at 99% of its industry's injury rate - about level with the typical Clay refractories (e.g., mortar, brick, tile, block) manufacturing workplace, earning a grade C.

Westlake Royal Roofing LLC-Corona: 3.3 TCR = 99% of Clay refractories (e.g., mortar, brick, tile, block) manufacturing BLS 3.3 · 3y Form 300A (see methodology below)

Westlake Royal Roofing LLC-Corona safety composite

Westlake Royal Roofing LLC-Corona scores strongest on dart rate (safer than 57% of same-industry peers) and weakest on fatalities (safer than 50%), 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).

D

54/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 3.26 per 100 workers

Safer than 55% of industry peers

DART rate
C 1.47 per 100 workers

Safer than 57% of industry peers

Fatalities
D 0

Safer than 50% 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

−3.5

2022→2024

Westlake Royal Roofing LLC-Corona injury rate improved

Westlake Royal Roofing LLC-Corona's TCR fell 3.5 from 5.0 in 2022 to 1.5 in 2024. Peak filing year was 2022 at 5.0 TCR. In 2024, DART was 0.45× this establishment's average TCR (severity share of cases).

2022=5.0 · 2023=3.3 · 2024=1.5

OSHA ITA Form 300A scorecard

Establishment book 327120 · Corona, CA AT/BELOW-IND · SMALL

Grade C · TCR 3.3 · 99% of ind

  • DART 1.5 DART
  • RANK #6/14
  • PHOTO Bennett Tunnel Plant
  • BOOK 3y book
  • INJ 6 inj
  • SIZE ~57 FTE

Nearest TCR peer: Bennett Tunnel Plant (0.0 TCR gap)

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Westlake Royal Roofing LLC-Corona in the TCR neighbourhood

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

TCR

What this shows Westlake Royal Roofing LLC-Corona averages 3.3 TCR (99% of the Clay refractories (e.g., mortar, brick, tile, block) manufacturing BLS benchmark).

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

Westlake Royal Roofing LLC-Corona TCR series: 2022=5 · 2023=3.3 · 2024=1.5 · BLS 3.3

Where Westlake Royal Roofing LLC-Corona falls in its industry

307 Clay refractories (e.g., morta establishments

Safer than 55% of graded establishments in this industry, whose median TCR is 3.7.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #6 safest of 14 Clay refractories (e.g., morta employers in California.

Westlake Royal Roofing LLC-Corona (57 employees, TCR 3.3) among 29 same-industry peers, split at the industry median of 57 employees and a TCR of 3.7 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 0200400600800 051015 Average employees Total Case Rate Westlake Royal Roofing LLC-Corona
Westlake Royal Roofing LLC-Corona (57 employees, TCR 3.3) among 29 same-industry peers, split at the industry median of 57 employees and a TCR of 3.7

Westlake Royal Roofing LLC-Corona has more employees than the Clay refractories (e.g., mortar, brick, median and a lower injury rate than the industry's median TCR of 3.7. 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 1.5 1.5 1 0 0
2023 3.3 3.3 2 0 0
2022 5.0 3.3 3 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

327120 · CA · Corona

307 Clay refractories (e.g., mortar, brick, tile, block) manufacturing 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 Bennett Tunnel Plant 3.3 TCR
NAICS-TCR The Christy Refractories Company L.L.C. 3.2 TCR
NAICS-TCR Crossville Distribution Center 3.3 TCR
NAICS-TCR Hanover Plant 3.2 TCR
STATE-SIZE Bowles Farming Company 57 FTE
STATE-SIZE Blanc Vineyards, LLC 57 FTE
STATE-SIZE MI RANCHITO FARMING INC 57 FTE
STATE-SIZE Farmland Management Services 57 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 TX211 3.3 TCR
NAT-TCR TransPak - DIV 145 TechRidge Austin 3.3 TCR
NAT-TCR De Nora Tech, LLC 3.3 TCR
NAT-TCR Aqua Illinois Kankakee Office 3.3 TCR
NAT-SIZE VMP Logistics, LLC 57 FTE
NAT-SIZE Anthony Allega Cement Contractor, Inc. 57 FTE
NAT-SIZE Peerless Machine & Tool Corporation 57 FTE
NAT-SIZE Agru America Andrews 2 57 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. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.