Mineral wool products (e.g., board, insulation, tile) manufacturing · Pennsylvania

Armstrong - Marietta

Marietta, PA · ~333 workers · 2 years of OSHA Injury Tracking Application data.

B
Good Safety Record
2.3
Avg TCR
3.3
Industry avg
0
Fatalities
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The verdict

Armstrong - Marietta runs at 71% of its industry's injury rate - safer than the typical Mineral wool products (e.g., board, insulation, tile) manufacturing workplace, earning a grade B.

Armstrong - Marietta: 2.3 TCR = 71% of Mineral wool products (e.g., board, insulation, tile) manufacturing BLS 3.3 · 2y Form 300A (see methodology below)

Armstrong - Marietta safety composite

Armstrong - Marietta scores strongest on fatalities (safer than 50% of same-industry peers) and weakest on dart rate (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

42/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
D 2.33 per 100 workers

Safer than 43% of industry peers

DART rate
D 1.48 per 100 workers

Safer than 36% 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

Armstrong - Marietta: 1.4 → 3.3 TCR

Peak year 2018 @ 3.3 TCR · DART/TCR 0.64× in 2018

Armstrong - Marietta's TCR rose 1.9 from 1.4 in 2016 to 3.3 in 2018. In 2018, DART was 0.64× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 327993 · Marietta, PA AT/BELOW-IND · MID

Grade B · TCR 2.3 · 71% of ind

  • DART 1.5 DART
  • RANK #4/4
  • PHOTO Owens Corning- McCor…
  • BOOK 2y book
  • INJ 6 inj
  • SIZE ~333 FTE

Nearest TCR peer: Owens Corning- McCormick (0.0 TCR gap)

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Armstrong - Marietta in the TCR neighbourhood

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

TCR

What this shows Armstrong - Marietta averages 2.3 TCR (71% of the Mineral wool products (e.g., board, insulation, tile) manufacturing BLS benchmark).

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

Armstrong - Marietta TCR series: 2016=1.4 · 2018=3.3 · BLS 3.3

Where Armstrong - Marietta falls in its industry

101 Mineral wool products (e.g., b establishments

Safer than 43% of graded establishments in this industry, whose median TCR is 2.2.

More dangerous than peersSafer than peers

Narrower to Pennsylvania alone (the establishments it most directly competes with for workers and contracts): ranked #4 safest of 4 Mineral wool products (e.g., b employers in Pennsylvania.

Armstrong - Marietta (333 employees, TCR 2.3) among 29 same-industry peers, split at the industry median of 126 employees and a TCR of 2.2 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 0200400600800 0246810 Average employees Total Case Rate Armstrong - Marietta
Armstrong - Marietta (333 employees, TCR 2.3) among 29 same-industry peers, split at the industry median of 126 employees and a TCR of 2.2

Armstrong - Marietta has more employees than the Mineral wool products (e.g., board, insu median and a higher injury rate than the industry's median TCR of 2.2. 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
2018 3.3 1.5 5 6 0
2016 1.4 0.2 1 5 0

OSHA ITA peer cross-reference

Establishment peer ledger

327993 · PA · Marietta

101 Mineral wool products (e.g., board, insulation, tile) manufacturing employers nationwide with a credible TCR · 22,692 rated employers in Pennsylvania with headcount on file · 14 employers in Marietta, PA · 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 Owens Corning- McCormick 2.3 TCR
NAICS-TCR CertainTeed Athens 2.4 TCR
NAICS-TCR Knauf Insulation Plant 12 2.4 TCR
NAICS-TCR Quietflex Manufacturing Company, L.P. 2.4 TCR
STATE-SIZE Washington 333 FTE
STATE-SIZE Blommer Chocolate Company - EG 333 FTE
STATE-SIZE High Concrete Group LLC. - Denver 333 FTE
STATE-SIZE Main Campus 333 FTE
CITY-NEAR Armstrong World Industries - Marietta Ceiling Plant 350 FTE
CITY-NEAR GSK Vaccines Marietta, PA 347 FTE
CITY-NEAR Armstrong World Industries 337 FTE
CITY-NEAR Lawn Equipment Parts Company 85 FTE
NAT-TCR Bemis North America - Batavia 2.3 TCR
NAT-TCR Aqua Virginia, Inc. - Rockville 2.3 TCR
NAT-TCR La Hacienda Nursing and Rehab Center 2.3 TCR
NAT-TCR BTD Manufacturing Dawsonville 2.3 TCR
NAT-SIZE MHPSA - Lake Mary 333 FTE
NAT-SIZE Toyota Boshoku America - Regional Headquarters 333 FTE
NAT-SIZE WRS 333 FTE
NAT-SIZE NSVLTNBT 333 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: 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.