Skiing Facilities · California
Mammoth Mountain Ski Area, LLC
Mammoth Lakes, CA · ~2,452 workers · 8 years of OSHA Injury Tracking Application data.
- F
- Failing Safety Record
- 9.9
- Avg TCR
- 3.1
- Industry avg
- 0
- Fatalities
The verdict
Mammoth Mountain Ski Area, LLC runs at 321% of its industry's injury rate - far more dangerous than the typical Skiing Facilities workplace, earning a grade F.
Mammoth Mountain Ski Area, LLC: 9.9 TCR = 321% of Skiing Facilities BLS 3.1 · 8y Form 300A (see methodology below)
Mammoth Mountain Ski Area, LLC safety composite
Mammoth Mountain Ski Area, LLC scores strongest on fatalities (safer than 52% of same-industry peers) and weakest on dart rate (safer than 28%), 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).
41/100
Percentile-weighted across 3 of 3 measures
- Total Case Rate (TCR)
- D 9.95 per 100 workers
Safer than 45% of industry peers
- DART rate
- F 7.84 per 100 workers
Safer than 28% of industry peers
- Fatalities
- D 0
Safer than 52% 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%).
Rising injury rate
Mammoth Mountain Ski Area, LLC: 7.1 → 13.2 TCR
Peak year 2023 @ 16.6 TCR · DART/TCR 0.79× in 2024
Mammoth Mountain Ski Area, LLC's TCR rose 6.1 from 7.1 in 2017 to 13.2 in 2024. Peak filing year was 2023 at 16.6 TCR. In 2024, DART was 0.79× this establishment's average TCR (severity share of cases).
OSHA ITA Form 300A scorecard
Establishment book 713920 · Mammoth Lakes, CA ABOVE-IND · LARGE
Grade F · TCR 9.9 · 321% of ind
- DART 7.8 DART
- RANK #7/15
- PHOTO 9277-650 STOWE
- BOOK 8y book
- INJ 767 inj
- SIZE ~2,452 FTE
Nearest TCR peer: 9277-650 STOWE (0.0 TCR gap)
Read with this employer → · Industry book → · California employers → · Look up another →
Mammoth Mountain Ski Area, LLC in the TCR neighbourhood
Average Total Case Rate among this establishment and nearest same-industry peers
- Big Boulder Sk
Big Boulder Ski Area
10.1 TCR
- This site
Mammoth Mountain Ski Area, LLC
9.9 TCR
- 9277-650 STOWE
9277-650 STOWE
9.9 TCR
- Lower Patrol R
Lower Patrol Room - Beaver Creek
9.8 TCR
- JFBB Ski Areas
JFBB Ski Areas, Inc.
9.8 TCR
What this shows Mammoth Mountain Ski Area, LLC averages 9.9 TCR (321% of the Skiing Facilities BLS benchmark).
Mammoth Mountain Ski Area, LLC TCR series: 2017=7.1 · 2018=5.2 · 2019=7.4 · 2020=9.9 · 2021=9.8 · 2022=10.4 · 2023=16.6 · 2024=13.2 · BLS 3.1
Where Mammoth Mountain Ski Area, LLC falls in its industry
121 Skiing Facilities establishmentsSafer than 45% of graded establishments in this industry, whose median TCR is 9.6.
Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #7 safest of 15 Skiing Facilities employers in California.
Mammoth Mountain Ski Area, LLC has more employees than the Skiing Facilities median and a higher injury rate than the industry's median TCR of 9.6. 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 |
|---|---|---|---|---|---|
| 2024 | 13.2 | 7.8 | 121 | 0 | 0 |
| 2023 | 16.6 | 8.2 | 140 | 0 | 0 |
| 2022 | 10.4 | 7.1 | 100 | 0 | 0 |
| 2021 | 9.8 | 6.8 | 80 | 8 | 0 |
| 2020 | 9.9 | 8.4 | 67 | 0 | 0 |
| 2019 | 7.4 | 6.1 | 98 | 0 | 0 |
| 2018 | 5.2 | 4.5 | 69 | 0 | 0 |
| 2017 | 7.1 | 5.6 | 92 | 5 | 0 |
OSHA ITA peer cross-reference
Establishment peer ledger
713920 · CA · Mammoth Lakes
121 Skiing Facilities employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 10 employers in Mammoth Lakes, 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 | 9277-650 STOWE | 9.9 TCR |
| NAICS-TCR | Lower Patrol Room - Beaver Creek | 9.8 TCR |
| NAICS-TCR | JFBB Ski Areas, Inc. | 9.8 TCR |
| NAICS-TCR | Big Boulder Ski Area | 10.1 TCR |
| STATE-SIZE | 2032-02121351 | 2,446 FTE |
| STATE-SIZE | Loma Linda University Health Shared Services | 2,464 FTE |
| STATE-SIZE | Corporate Office | 2,439 FTE |
| STATE-SIZE | DURAN CONTRACTING INC | 2,468 FTE |
| CITY-NEAR | Mammoth Hospital | 410 FTE |
| CITY-NEAR | California Department of Transportation Facility 314 | 315 FTE |
| CITY-NEAR | 6962-SWY-0029-0029-02400 | 102 FTE |
| CITY-NEAR | SWY-0029-0029-02400 FAC-02400-MAMMOTH LAKES-CA | 101 FTE |
| NAT-TCR | Police Department | 9.9 TCR |
| NAT-TCR | Corporate Office | 9.9 TCR |
| NAT-TCR | DDRC Weiland Center | 9.9 TCR |
| NAT-TCR | Rochester | 9.9 TCR |
| NAT-SIZE | Wabash Lafayette North | 2,452 FTE |
| NAT-SIZE | Ahs Hillcrest Medical Center LLC | 2,452 FTE |
| NAT-SIZE | Northern Illinois Medical Center | 2,452 FTE |
| NAT-SIZE | City of Spokane | 2,451 FTE |
Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →
Read our methodology - how this data is sourced, computed, and verified.