Architectural block, concrete (e.g., fluted, ground face, screen, slump, split), manufacturing · Delaware

Parkerblock

Millsboro, DE · ~67 workers · 8 years of OSHA Injury Tracking Application data.

D
Poor Safety Record
6.4
Avg TCR
3.3
Industry avg
0
Fatalities
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The verdict

Parkerblock runs at 195% of its industry's injury rate - more dangerous than the typical Architectural block, concrete (e.g., fluted, ground face, screen, slump, split), manufacturing workplace, earning a grade D.

Parkerblock: 6.4 TCR = 195% of Architectural block, concrete (e.g., fluted, ground face, screen, slump, split), manufacturing BLS 3.3 · 8y Form 300A (see methodology below)

Parkerblock safety composite

Parkerblock scores strongest on dart rate (safer than 79% of same-industry peers) and weakest on total case rate (tcr) (safer than 27%), 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

51/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 6.43 per 100 workers

Safer than 27% of industry peers

DART rate
B 0 per 100 workers

Safer than 79% 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

Parkerblock: 8.0 → 8.5 TCR

Peak year 2021 @ 9.0 TCR · DART/TCR 0× in 2023

Parkerblock's TCR rose 0.5 from 8.0 in 2016 to 8.5 in 2023. Peak filing year was 2021 at 9.0 TCR. In 2023, DART was 0× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 327331 · Millsboro, DE ABOVE-IND · SMALL

Grade D · TCR 6.4 · 195% of ind

  • DART 0.0 DART
  • RANK P27
  • PHOTO ADOLPH JANDRIS & SON…
  • BOOK 8y book
  • INJ 33 inj
  • SIZE ~67 FTE

Nearest TCR peer: ADOLPH JANDRIS & SONS INC (0.0 TCR gap)

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

Parkerblock in the TCR neighbourhood

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

TCR

What this shows Parkerblock averages 6.4 TCR (195% of the Architectural block, concrete (e.g., fluted, ground face, screen, slump, split), manufacturing BLS benchmark).

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

Parkerblock TCR series: 2016=8 · 2017=3.5 · 2018=6.4 · 2019=4.3 · 2020=5.4 · 2021=9 · 2022=6.4 · 2023=8.5 · BLS 3.3

Where Parkerblock falls in its industry

321 Architectural block, concrete establishments

Safer than 27% of graded establishments in this industry, whose median TCR is 4.1.

More dangerous than peersSafer than peers
Parkerblock (67 employees, TCR 6.4) among 29 same-industry peers, split at the industry median of 42 employees and a TCR of 4.1 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 0100200300 051015 Average employees Total Case Rate Parkerblock
Parkerblock (67 employees, TCR 6.4) among 29 same-industry peers, split at the industry median of 42 employees and a TCR of 4.1

Parkerblock has more employees than the Architectural block, concrete (e.g., flu median and a higher injury rate than the industry's median TCR of 4.1. 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 8.5 0.0 6 0 0
2022 6.4 6.4 4 0 0
2021 9.0 1.5 6 0 0
2020 5.4 4.0 4 0 0
2019 4.3 4.3 3 0 0
2018 6.4 4.8 4 0 0
2017 3.5 1.7 2 0 0
2016 8.0 4.0 4 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

327331 · DE · Millsboro

321 Architectural block, concrete (e.g., fluted, ground face, screen, slump, split), manufacturing employers nationwide with a credible TCR · 1,487 rated employers in Delaware with headcount on file · 53 employers in Millsboro, DE · 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 ADOLPH JANDRIS & SONS INC 6.4 TCR
NAICS-TCR 4018 - Eau Claire Concrete Plant 6.4 TCR
NAICS-TCR Cast Systems LLC 6.4 TCR
NAICS-TCR EMCO ---- Bladensburg 6.4 TCR
STATE-SIZE Eastern Shore Natural Gas 67 FTE
STATE-SIZE Diamond State Masonry - DE 67 FTE
STATE-SIZE US064: Wilmington 557 - SG 67 FTE
STATE-SIZE Amick Farms Delmar Feed Mill 67 FTE
CITY-NEAR Millsboro Processing 2,261 FTE
CITY-NEAR Allen Harim LLC 1,271 FTE
CITY-NEAR DEL0000021 GOODWILL INDUSTRIES - MILLSBORO 1,028 FTE
CITY-NEAR Pinnacle Plant /Allen Harim LLC 397 FTE
NAT-TCR Therm-O-Rock East, Inc. 6.4 TCR
NAT-TCR Big Lots Store #4669 Webster, MA 6.4 TCR
NAT-TCR Groffdale Concrete Walls, Inc. 6.4 TCR
NAT-TCR Kentucky Machine & Engineering, Inc. 6.4 TCR
NAT-SIZE Kenneth C. Wilson 67 FTE
NAT-SIZE Bostic Steel Inc 67 FTE
NAT-SIZE TN105 Lebanon (American Corrugated) 67 FTE
NAT-SIZE Spring Hills Lake Mary 67 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, 2022, 2021, 2020, 2019, 2018, 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.