Masonry Contractors · Delaware

Diamond State Masonry

Name: Diamond State Masonry Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

New Castle, DE · ~59 workers · 4 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

C
Average Safety Record: 2.7
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

Diamond State Masonry runs at 95% of its industry's injury rate - about level with the typical Masonry Contractors workplace, earning a grade C.

Diamond State Masonry: 2.7 TCR = 95% of Masonry Contractors BLS 2.8 · 4y Form 300A (see methodology below)

Diamond State Masonry safety composite

Diamond State Masonry scores strongest on total case rate (tcr) (safer than 67% of same-industry peers) and weakest on dart rate (safer than 11%), 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).

43/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): C 2.66 per 100 workers

Safer than 67% of industry peers
DART rate: F 7.14 per 100 workers

Safer than 11% of industry peers
Fatalities: D 0

Safer than 51% 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

Diamond State Masonry: 1.6 → 7.1 TCR

Peak year 2023 @ 7.1 TCR · DART/TCR 2.68× in 2023

Diamond State Masonry's TCR rose 5.6 from 1.6 in 2020 to 7.1 in 2023. In 2023, DART was 2.68× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 238140 · New Castle, DE AT/BELOW-IND · SMALL

Grade C · TCR 2.7 · 95% of ind

DART 7.1 DART
RANK #4/8
PHOTO IMS Masonry
BOOK 4y book
INJ 5 inj
SIZE ~59 FTE

Nearest TCR peer: IMS Masonry (0.0 TCR gap)

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This site

2.7
IMS Masonry

2.7
McGill Restora

2.7
Hardesty & Son

2.7
Clay Plaster a

2.6

What this shows Diamond State Masonry averages 2.7 TCR (95% of the Masonry Contractors BLS benchmark).

Diamond State Masonry TCR series: 2020=1.6 · 2021=1.9 · 2022=0 · 2023=7.1 · BLS 2.8

Where Diamond State Masonry falls in its industry

703 Masonry Contractors establishments

Safer than 67% of graded establishments in this industry, whose median TCR is 3.9.

Grade C

More dangerous than peersSafer than peers

Narrower to Delaware alone (the establishments it most directly competes with for workers and contracts): ranked #4 safest of 8 Masonry Contractors employers in Delaware.

Diamond State Masonry (59 employees, TCR 2.7) among 29 same-industry peers, split at the industry median of 52 employees and a TCR of 3.9

Diamond State Masonry has more employees than the Masonry Contractors median and a lower 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
2023	7.1	7.1	3
2022	0.0	0.0	0
2021	1.9	1.9	1
2020	1.6	1.6	1

OSHA ITA peer cross-reference

Establishment peer ledger

238140 · DE · New Castle

703 Masonry Contractors employers nationwide with a credible TCR · 1,487 rated employers in Delaware with headcount on file · 192 employers in New Castle, DE · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel	Establishment	Place	Metric
NAICS-TCR	IMS Masonry	LINDON, UT	2.7 TCR
NAICS-TCR	McGill Restoration, Inc.	OMAHA, NE	2.7 TCR
NAICS-TCR	Clay Plaster and Stucco	MANSFIELD, TX	2.6 TCR
NAICS-TCR	Hardesty & Sons, Inc.	CHICO, CA	2.7 TCR
STATE-SIZE	Boulden Services LLC	NEWARK	59 FTE
STATE-SIZE	5472-NAI-0034-0034-00808	WILMINGTON	59 FTE
STATE-SIZE	096050-SEAFORD PO	SEAFORD	59 FTE
STATE-SIZE	096823-WLM-MARSHALLTON BR	WILMINGTON	59 FTE
CITY-NEAR	DEL0000070 GOODWILL INDUSTRIES - OUTLET	New Castle	1,028 FTE
CITY-NEAR	Amazon.com Services LLC - ILG1	New Castle	864 FTE
CITY-NEAR	Amazon.com Services LLC - PHL1	New Castle	646 FTE
CITY-NEAR	DEL0000050 GOODWILL INDUSTRIES - WAREHOU	New Castle	633 FTE
NAT-TCR	Joy Global Underground Mining, LLC - Duffield	Duffield, VA	2.7 TCR
NAT-TCR	Thorne research - Omni one	Summerville, SC	2.7 TCR
NAT-TCR	Perko's Cafe and Grill #120	Riverbank, CA	2.7 TCR
NAT-TCR	Lancaster EMS - West	Millersville, PA	2.7 TCR
NAT-SIZE	475 - Calhoun	Chattanooga, TN	59 FTE
NAT-SIZE	Santa Teresa - UP	Santa Teresa, NM	59 FTE
NAT-SIZE	Southview - Lilydale Senior Living	Lilydale, MN	59 FTE
NAT-SIZE	Soundcoat - Deer Park	Deer Park, NY	59 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. 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.