Limestone mining or quarrying · California

Permanente

Cupertino, CA · ~18 workers · 2 years of OSHA Injury Tracking Application data.

C
Average Safety Record
0.0
Avg TCR
1.9
Industry avg
0
Fatalities
Subscribe to safety-record updates (RSS)

The verdict

Permanente runs at 0% of its industry's injury rate - about level with the typical Limestone mining or quarrying workplace, earning a grade C.

Permanente: 0.0 TCR = 0% of Limestone mining or quarrying BLS 1.9 · 2y Form 300A (see methodology below)

Permanente safety composite

Permanente scores strongest on total case rate (tcr) (safer than 100% 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).

B

80/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
A 0 per 100 workers

Safer than 100% of industry peers

DART rate
B 0 per 100 workers

Safer than 78% 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%).

Permanente held a steady TCR band

Permanente's TCR held near 0.0 from 0.0 in 2022 to 0.0 in 2023. Peak filing year was 2022 at 0.0 TCR.

2022=0.0 · 2023=0.0

OSHA ITA Form 300A scorecard

Establishment book 212311 · Cupertino, CA AT/BELOW-IND · SMALL

Grade C · TCR 0.0 · 0% of ind

  • DART 0.0 DART
  • RANK #0/7
  • PHOTO Rolling Rock Buildin…
  • BOOK 2y book
  • INJ 0 inj
  • SIZE ~18 FTE

Nearest TCR peer: Rolling Rock Building Stone, Inc. (0.5 TCR gap)

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

Permanente in the TCR neighbourhood

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

TCR

What this shows Permanente averages 0.0 TCR (0% of the Limestone mining or quarrying BLS benchmark).

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

Permanente TCR series: 2022=0 · 2023=0 · BLS 1.9

Where Permanente falls in its industry

27 Limestone mining or quarrying establishments

Safer than 100% of graded establishments in this industry, whose median TCR is 4.6.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #0 safest of 7 Limestone mining or quarrying employers in California.

Permanente (18 employees, TCR 0.0) among 17 same-industry peers, split at the industry median of 48 employees and a TCR of 4.6 2×2 strategic matrix plotting 18 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 050100150 05101520 Average employees Total Case Rate Permanente
Permanente (18 employees, TCR 0.0) among 17 same-industry peers, split at the industry median of 48 employees and a TCR of 4.6

Permanente has fewer employees than the Limestone mining or quarrying median and a lower injury rate than the industry's median TCR of 4.6. 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
2023 0.0 0.0 0 0 0
2022 0.0 0.0 0 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

212311 · CA · Cupertino

27 Limestone mining or quarrying employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 47 employers in Cupertino, CA · 4 cross-state NAT-TCR peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR Rolling Rock Building Stone, Inc. 0.5 TCR
NAICS-TCR Dolomite Inc. 1.0 TCR
NAICS-TCR Brandywine Explosives & Supply Inc. 1.4 TCR
NAICS-TCR Cedar Creek Quarries, Inc 1.4 TCR
STATE-SIZE Henry Hibino Farms LLC 18 FTE
STATE-SIZE BATAVIA, INC. 18 FTE
STATE-SIZE Gold Coast Farms 18 FTE
STATE-SIZE HM.CLAUSE Davis East Research Station 18 FTE
CITY-NEAR 6017-Loc: CORP LOC - USA UNITED STATES - Santa Clara Valley 37,591 FTE
CITY-NEAR 6017-CORP LOC - USA UNITED STATES - SCV 31,225 FTE
CITY-NEAR 6017-USA UNITED STATES - WAH - CA 13,009 FTE
CITY-NEAR 6017-Loc: USA UNITED STATES - WAH - CA 8,703 FTE
NAT-TCR Kinship Pointe Seward 0.0 TCR
NAT-TCR Carbro Constructors Corp Main 0.0 TCR
NAT-TCR Chicago Corporate 0.0 TCR
NAT-TCR Keller Warehouse 0.0 TCR

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: 2023, 2022. 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.