Concrete product (e.g., structural precast, structural prestressed) installation · Maryland

Interlock Steelworkers Inc.

Mount Airy, MD · ~54 workers · 2 years of OSHA Injury Tracking Application data.

D
Poor Safety Record
5.2
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Interlock Steelworkers Inc. runs at 185% of its industry's injury rate - more dangerous than the typical Concrete product (e.g., structural precast, structural prestressed) installation workplace, earning a grade D.

Interlock Steelworkers Inc.: 5.2 TCR = 185% of Concrete product (e.g., structural precast, structural prestressed) installation BLS 2.8 · 2y Form 300A (see methodology below)

Interlock Steelworkers Inc. safety composite

Interlock Steelworkers Inc. scores strongest on fatalities (safer than 53% of same-industry peers) and weakest on total case rate (tcr) (safer than 36%), 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

41/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
D 5.17 per 100 workers

Safer than 36% of industry peers

DART rate
D 2.69 per 100 workers

Safer than 38% of industry peers

Fatalities
D 0

Safer than 53% 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

−5.0

2021→2023

Interlock Steelworkers Inc. injury rate improved

Interlock Steelworkers Inc.'s TCR fell 5.0 from 7.7 in 2021 to 2.7 in 2023. Peak filing year was 2021 at 7.7 TCR. In 2023, DART was 0.52× this establishment's average TCR (severity share of cases).

2021=7.7 · 2023=2.7

OSHA ITA Form 300A scorecard

Establishment book 238120 · Mount Airy, MD ABOVE-IND · SMALL

Grade D · TCR 5.2 · 185% of ind

  • DART 2.7 DART
  • RANK #10/11
  • PHOTO Steel Erection
  • BOOK 2y book
  • INJ 4 inj
  • SIZE ~54 FTE

Nearest TCR peer: Steel Erection (0.0 TCR gap)

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

Interlock Steelworkers Inc. in the TCR neighbourhood

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

TCR

What this shows Interlock Steelworkers Inc. averages 5.2 TCR (185% of the Concrete product (e.g., structural precast, structural prestressed) installation BLS benchmark).

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

Interlock Steelworkers Inc. TCR series: 2021=7.7 · 2023=2.7 · BLS 2.8

Where Interlock Steelworkers Inc. falls in its industry

705 Concrete product (e.g., struct establishments

Safer than 36% of graded establishments in this industry, whose median TCR is 3.9.

More dangerous than peersSafer than peers

Narrower to Maryland alone (the establishments it most directly competes with for workers and contracts): ranked #10 safest of 11 Concrete product (e.g., struct employers in Maryland.

Interlock Steelworkers Inc. (54 employees, TCR 5.2) among 29 same-industry peers, split at the industry median of 58 employees and a TCR of 3.9 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 0246810 Average employees Total Case Rate Interlock Steelworkers Inc.
Interlock Steelworkers Inc. (54 employees, TCR 5.2) among 29 same-industry peers, split at the industry median of 58 employees and a TCR of 3.9

Interlock Steelworkers Inc. has fewer employees than the Concrete product (e.g., structural preca median and a higher injury rate than the industry's median TCR of 3.9. 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 2.7 2.7 1 0 0
2021 7.7 7.7 3 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238120 · MD · Mount Airy

705 Concrete product (e.g., structural precast, structural prestressed) installation employers nationwide with a credible TCR · 7,213 rated employers in Maryland with headcount on file · 22 employers in Mount Airy, MD · 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 Steel Erection 5.2 TCR
NAICS-TCR Midland Steel Erection, LLC 5.1 TCR
NAICS-TCR ADF International Inc. 5.1 TCR
NAICS-TCR Gulf Shores Precast Erectors dba Gulf Coast Precast Erectors 5.1 TCR
STATE-SIZE 6728-00030023-25 54 FTE
STATE-SIZE Conowingo 54 FTE
STATE-SIZE R E Harrington Plumbing & Heating Co. Inc. 54 FTE
STATE-SIZE FiberPlus, Inc. 54 FTE
CITY-NEAR 2551 187 FTE
CITY-NEAR WM 2551 186 FTE
CITY-NEAR M&M Welding - Mount Airy 127 FTE
CITY-NEAR Altimate Electric, Inc. 126 FTE
NAT-TCR McDal Corporation KOP 5.2 TCR
NAT-TCR Chemence Inc 5.2 TCR
NAT-TCR Marianjoy Medical Group 5.2 TCR
NAT-TCR Magnolia/161 5.2 TCR
NAT-SIZE Lummus Corporation- Plant #2 54 FTE
NAT-SIZE ODW - Redlands-1 54 FTE
NAT-SIZE Serv-All 54 FTE
NAT-SIZE KPC Promise Skilled Nursing Facility of Overland Park 54 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: 2023, 2021. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.