General freight trucking, local · South Carolina

Extreme Materials, Inc. dba Knights Trucking

Summerville, SC · ~40 workers · 3 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
9.3
Avg TCR
4.5
Industry avg
0
Fatalities
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The verdict

Extreme Materials, Inc. dba Knights Trucking runs at 207% of its industry's injury rate - far more dangerous than the typical General freight trucking, local workplace, earning a grade F.

Extreme Materials, Inc. dba Knights Trucking: 9.3 TCR = 207% of General freight trucking, local BLS 4.5 · 3y Form 300A (see methodology below)

Extreme Materials, Inc. dba Knights Trucking safety composite

Extreme Materials, Inc. dba Knights Trucking scores strongest on dart rate (safer than 56% of same-industry peers) and weakest on total case rate (tcr) (safer than 15%), 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

38/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 9.31 per 100 workers

Safer than 15% of industry peers

DART rate
C 2.45 per 100 workers

Safer than 56% 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

−5.3

2019→2021

Extreme Materials, Inc. dba Knights Trucking injury rate improved

Extreme Materials, Inc. dba Knights Trucking's TCR fell 5.3 from 7.8 in 2019 to 2.5 in 2021. Peak filing year was 2020 at 17.7 TCR. In 2021, DART was 0.26× this establishment's average TCR (severity share of cases).

2019=7.8 · 2020=17.7 · 2021=2.5

OSHA ITA Form 300A scorecard

Establishment book 484110 · Summerville, SC ABOVE-IND · SMALL

Grade F · TCR 9.3 · 207% of ind

  • DART 2.5 DART
  • RANK #57/63
  • PHOTO NCGST - GASTONIA
  • BOOK 3y book
  • INJ 9 inj
  • SIZE ~40 FTE

Nearest TCR peer: NCGST - GASTONIA (0.0 TCR gap)

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

Extreme Materials, Inc. dba Knights Trucking in the TCR neighbourhood

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

TCR

What this shows Extreme Materials, Inc. dba Knights Trucking averages 9.3 TCR (207% of the General freight trucking, local BLS benchmark).

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

Extreme Materials, Inc. dba Knights Trucking TCR series: 2019=7.8 · 2020=17.7 · 2021=2.5 · BLS 4.5

Where Extreme Materials, Inc. dba Knights Trucking falls in its industry

2,784 General freight trucking, loca establishments

Safer than 15% of graded establishments in this industry, whose median TCR is 4.7.

More dangerous than peersSafer than peers

Narrower to South Carolina alone (the establishments it most directly competes with for workers and contracts): ranked #57 safest of 63 General freight trucking, loca employers in South Carolina.

Extreme Materials, Inc. dba Knights Trucking (40 employees, TCR 9.3) among 29 same-industry peers, split at the industry median of 47 employees and a TCR of 4.7 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 Extreme Materials, Inc. dba Knights Trucking
Extreme Materials, Inc. dba Knights Trucking (40 employees, TCR 9.3) among 29 same-industry peers, split at the industry median of 47 employees and a TCR of 4.7

Extreme Materials, Inc. dba Knights Trucking has fewer employees than the General freight trucking, local median and a higher injury rate than the industry's median TCR of 4.7. 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
2021 2.5 2.5 1 0 0
2020 17.7 11.8 5 1 0
2019 7.8 5.2 3 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

484110 · SC · Summerville

2,784 General freight trucking, local employers nationwide with a credible TCR · 7,610 rated employers in South Carolina with headcount on file · 188 employers in Summerville, SC · 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 NCGST - GASTONIA 9.3 TCR
NAICS-TCR Brown Trucking Company Montgomery, AL 9.3 TCR
NAICS-TCR H&S Enterprise Aberdeen 9.3 TCR
NAICS-TCR SCS ELK GROVE - 3844 (ILEGR) 9.3 TCR
STATE-SIZE Log Creek Thinning Inc 40 FTE
STATE-SIZE Southern Region Complex (Florence) 40 FTE
STATE-SIZE CEC Main Location 40 FTE
STATE-SIZE Sands Building Group 40 FTE
CITY-NEAR Thorne research - Omni one 478 FTE
CITY-NEAR Scout Boats, Inc 436 FTE
CITY-NEAR Summerville Medical Center 426 FTE
CITY-NEAR WM 1037 420 FTE
NAT-TCR Store 0629 9.3 TCR
NAT-TCR Good Samaritan Hospital (CA) 9.3 TCR
NAT-TCR Diamond Ridge HealthCare Center 9.3 TCR
NAT-TCR North Arundel Health and Rehabilitation Center 9.3 TCR
NAT-SIZE Fortis Solutions Group (Independence) 40 FTE
NAT-SIZE 42361c - Toms River 40 FTE
NAT-SIZE 4769-883-West Elm 40 FTE
NAT-SIZE Lakeshore Assisted Living 40 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: 2021, 2020, 2019. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.