Machine shops · Texas

Inrock Drilling Systems

Houston, TX · ~42 workers · 5 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
0.9
Avg TCR
3.3
Industry avg
0
Fatalities
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The verdict

Inrock Drilling Systems runs at 28% of its industry's injury rate - far safer than the typical Machine shops workplace, earning a grade A.

Inrock Drilling Systems: 0.9 TCR = 28% of Machine shops BLS 3.3 · 5y Form 300A (see methodology below)

Inrock Drilling Systems safety composite

Inrock Drilling Systems scores strongest on total case rate (tcr) (safer than 92% 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

76/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
A 0.91 per 100 workers

Safer than 92% of industry peers

DART rate
B 0 per 100 workers

Safer than 75% 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%).

Inrock Drilling Systems held a steady TCR band

Inrock Drilling Systems's TCR held near 0.0 from 0.0 in 2016 to 0.0 in 2024. Peak filing year was 2022 at 2.3 TCR. In 2024, DART was 0× this establishment's average TCR (severity share of cases).

2016=0.0 · 2017=2.2 · 2022=2.3 · 2023=0.0 · 2024=0.0

OSHA ITA Form 300A scorecard

Establishment book 332710 · Houston, TX AT/BELOW-IND · SMALL

Grade A · TCR 0.9 · 28% of ind

  • DART 0.0 DART
  • RANK #21/108
  • PHOTO Howmet - Winsted
  • BOOK 5y book
  • INJ 2 inj
  • SIZE ~42 FTE

Nearest TCR peer: Howmet - Winsted (0.0 TCR gap)

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

Inrock Drilling Systems in the TCR neighbourhood

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

TCR

What this shows Inrock Drilling Systems averages 0.9 TCR (28% of the Machine shops BLS benchmark).

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

Inrock Drilling Systems TCR series: 2016=0 · 2017=2.2 · 2022=2.3 · 2023=0 · 2024=0 · BLS 3.3

Where Inrock Drilling Systems falls in its industry

1,821 Machine shops establishments

Safer than 92% of graded establishments in this industry, whose median TCR is 3.5.

More dangerous than peersSafer than peers

Narrower to Texas alone (the establishments it most directly competes with for workers and contracts): ranked #21 safest of 108 Machine shops employers in Texas.

Inrock Drilling Systems (42 employees, TCR 0.9) among 29 same-industry peers, split at the industry median of 48 employees and a TCR of 3.5 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 050100150200250 051015 Average employees Total Case Rate Inrock Drilling Systems
Inrock Drilling Systems (42 employees, TCR 0.9) among 29 same-industry peers, split at the industry median of 48 employees and a TCR of 3.5

Inrock Drilling Systems has fewer employees than the Machine shops median and a lower injury rate than the industry's median TCR of 3.5. 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 0.0 0.0 0 0 0
2023 0.0 0.0 0 0 0
2022 2.3 0.0 1 0 0
2017 2.2 2.2 1 0 0
2016 0.0 0.0 0 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

332710 · TX · Houston

1,821 Machine shops employers nationwide with a credible TCR · 38,394 rated employers in Texas with headcount on file · 5,116 employers in Houston, 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 Howmet - Winsted 0.9 TCR
NAICS-TCR RYAN MANUFACTURING INC. 0.9 TCR
NAICS-TCR Douglas Machine & Engineering LLC 0.9 TCR
NAICS-TCR Prosource Trace-A-Matic LLC 0.9 TCR
STATE-SIZE Headquarters Southeast 42 FTE
STATE-SIZE Littlefield Feedyard 42 FTE
STATE-SIZE TEXAS BEEF PRODUCERS 42 FTE
STATE-SIZE 3-H Dairy LLC 42 FTE
CITY-NEAR IAH IAH 11,560 FTE
CITY-NEAR IAH - Airport United Airlines Offices 10,239 FTE
CITY-NEAR 6925-IAH 9,442 FTE
CITY-NEAR Houston Methodist Hospital Texas Medical Center 8,873 FTE
NAT-TCR Kru's Delivery Services Inc 0.9 TCR
NAT-TCR Susan Street Pant 0.9 TCR
NAT-TCR Aerometalica Corporation 0.9 TCR
NAT-TCR Wall, JFKS Facility 0.9 TCR
NAT-SIZE Brickham Stamping Co 42 FTE
NAT-SIZE Marton Precision Manufacturing LLC 42 FTE
NAT-SIZE C-Lock Inc 42 FTE
NAT-SIZE Lakeside Industries - Port Angeles 42 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, 2017, 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.