Building materials supply dealers · Texas

Rock Materials Houston

Tomball, TX · ~35 workers · 3 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
9.4
Avg TCR
3.4
Industry avg
0
Fatalities
Subscribe to safety-record updates (RSS)

The verdict

Rock Materials Houston runs at 277% of its industry's injury rate - far more dangerous than the typical Building materials supply dealers workplace, earning a grade F.

Rock Materials Houston: 9.4 TCR = 277% of Building materials supply dealers BLS 3.4 · 3y Form 300A (see methodology below)

Rock Materials Houston safety composite

Rock Materials Houston scores strongest on dart rate (safer than 82% of same-industry peers) and weakest on total case rate (tcr) (safer than 21%), 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

50/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 9.42 per 100 workers

Safer than 21% of industry peers

DART rate
B 0 per 100 workers

Safer than 82% 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%).

Rising injury rate

Rock Materials Houston: 2.9 → 4.9 TCR

Peak year 2018 @ 20.5 TCR · DART/TCR 0× in 2019

Rock Materials Houston's TCR rose 2.0 from 2.9 in 2016 to 4.9 in 2019. Peak filing year was 2018 at 20.5 TCR. In 2019, DART was 0× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 444190 · Tomball, TX ABOVE-IND · SMALL

Grade F · TCR 9.4 · 277% of ind

  • DART 0.0 DART
  • RANK #111/180
  • PHOTO Ring's End Wilton
  • BOOK 3y book
  • INJ 6 inj
  • SIZE ~35 FTE

Nearest TCR peer: Ring's End Wilton (0.0 TCR gap)

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

Rock Materials Houston in the TCR neighbourhood

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

TCR

What this shows Rock Materials Houston averages 9.4 TCR (277% of the Building materials supply dealers BLS benchmark).

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

Rock Materials Houston TCR series: 2016=2.9 · 2018=20.5 · 2019=4.9 · BLS 3.4

Where Rock Materials Houston falls in its industry

1,643 Building materials supply deal establishments

Safer than 21% of graded establishments in this industry, whose median TCR is 5.2.

More dangerous than peersSafer than peers

Narrower to Texas alone (the establishments it most directly competes with for workers and contracts): ranked #111 safest of 180 Building materials supply deal employers in Texas.

Rock Materials Houston (35 employees, TCR 9.4) among 29 same-industry peers, split at the industry median of 35 employees and a TCR of 5.2 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 050100150200 0510152025 Average employees Total Case Rate Rock Materials Houston
Rock Materials Houston (35 employees, TCR 9.4) among 29 same-industry peers, split at the industry median of 35 employees and a TCR of 5.2

Rock Materials Houston has more employees than the Building materials supply dealers median and a higher injury rate than the industry's median TCR of 5.2. 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
2019 4.9 0.0 2 0 0
2018 20.5 20.5 3 0 0
2016 2.9 0.0 1 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

444190 · TX · Tomball

1,643 Building materials supply dealers employers nationwide with a credible TCR · 38,394 rated employers in Texas with headcount on file · 90 employers in Tomball, TX · 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 Ring's End Wilton 9.4 TCR
NAICS-TCR ABS Jacksonville Millwork 9.4 TCR
NAICS-TCR E.L. Morse Lumber 9.4 TCR
NAICS-TCR Jacksonville Division 9.4 TCR
STATE-SIZE Southwest Feedyard 35 FTE
STATE-SIZE CDF Dairy 35 FTE
STATE-SIZE Cal-Maine Foods, Inc. - Marion, TX 35 FTE
STATE-SIZE Growers Select Produce, Inc. 35 FTE
CITY-NEAR TOMBALL REGIONAL MEDICAL CENTER 685 FTE
CITY-NEAR Houston Eye Associates (TB) 616 FTE
CITY-NEAR Houston Eye Associates (Sun) 616 FTE
CITY-NEAR 5045 399 FTE
NAT-TCR 01H2 9.4 TCR
NAT-TCR OCCDP Joplin 9.4 TCR
NAT-TCR Sioux Valley Energy - Brandon 9.4 TCR
NAT-TCR Lieberman Center for Health and Rehabilitation 9.4 TCR
NAT-SIZE Feeding America Southwest Virginia Salem Branch 35 FTE
NAT-SIZE Stiegler 35 FTE
NAT-SIZE Cymer - Dayton 35 FTE
NAT-SIZE Falcon Contracting Company Inc. 35 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: 2019, 2018, 2016. 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.