Fabricated structural metal manufacturing · Massachusetts

Diamond Iron Works

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

Lawrence, MA · ~49 workers · 3 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · August 25, 2026

C
Average Safety Record: 3.6
Avg TCR: 3.3
Industry avg: 0
Fatalities

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The verdict

Diamond Iron Works runs at 108% of its industry's injury rate - about level with the typical Fabricated structural metal manufacturing workplace, earning a grade C.

Diamond Iron Works: 3.6 TCR = 108% of Fabricated structural metal manufacturing BLS 3.3 · 3y Form 300A (see methodology below)

Diamond Iron Works safety composite

Diamond Iron Works scores strongest on total case rate (tcr) (safer than 60% of same-industry peers) and weakest on dart rate (safer than 42%), 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).

51/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): C 3.58 per 100 workers

Safer than 60% of industry peers
DART rate: D 2.26 per 100 workers

Safer than 42% 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%).

TCR Δ

−3.8

2018→2020

Diamond Iron Works injury rate improved

Diamond Iron Works's TCR fell 3.8 from 6.1 in 2018 to 2.3 in 2020. Peak filing year was 2018 at 6.1 TCR. In 2020, DART was 0.63× this establishment's average TCR (severity share of cases).

2018=6.1 · 2019=2.4 · 2020=2.3

OSHA ITA Form 300A scorecard

Establishment book 332312 · Lawrence, MA ABOVE-IND · SMALL

Grade C · TCR 3.6 · 108% of ind

DART 2.3 DART
RANK #6/12
PHOTO Southern Metal Fabri…
BOOK 3y book
INJ 4 inj
SIZE ~49 FTE

Nearest TCR peer: Southern Metal Fabricators, Inc. (0.0 TCR gap)

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

This site

3.6
Southern Metal

3.6
Victory Steel

3.6
Ambassador Ste

3.6
Page Steel Inc

3.6

What this shows Diamond Iron Works averages 3.6 TCR (108% of the Fabricated structural metal manufacturing BLS benchmark).

Diamond Iron Works TCR series: 2018=6.1 · 2019=2.4 · 2020=2.3 · BLS 3.3

Where Diamond Iron Works falls in its industry

1,491 Fabricated structural metal ma establishments

Safer than 60% of graded establishments in this industry, whose median TCR is 4.6.

Grade C

More dangerous than peersSafer than peers

Narrower to Massachusetts alone (the establishments it most directly competes with for workers and contracts): ranked #6 safest of 12 Fabricated structural metal ma employers in Massachusetts.

Diamond Iron Works (49 employees, TCR 3.6) among 29 same-industry peers, split at the industry median of 54 employees and a TCR of 4.6

Diamond Iron Works has fewer employees than the Fabricated structural metal manufacturin median and a lower injury rate than the industry's median TCR of 4.6. 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
2020	2.3	2.3	1
2019	2.4	2.4	1
2018	6.1	0.0	2

OSHA ITA peer cross-reference

Establishment peer ledger

332312 · MA · Lawrence

1,491 Fabricated structural metal manufacturing employers nationwide with a credible TCR · 10,108 rated employers in Massachusetts with headcount on file · 77 employers in Lawrence, MA · 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	Southern Metal Fabricators, Inc.	ALBERTVILLE, AL	3.6 TCR
NAICS-TCR	Victory Steel Co.	BALTIMORE, MD	3.6 TCR
NAICS-TCR	Ambassador Steel-Waukesha Wisconsin	WAUKESHA, WI	3.6 TCR
NAICS-TCR	Page Steel Inc	PAGE, AZ	3.6 TCR
STATE-SIZE	G&F Precision Molding INC	DANVERS	49 FTE
STATE-SIZE	Main Office	RAYNHAM	49 FTE
STATE-SIZE	TANGO CONSTRCTION, INC.	FITCHBURG	49 FTE
STATE-SIZE	Nashoba Air Inc.	LITTLETON	49 FTE
CITY-NEAR	LAWRENCE GENERAL HOSPITAL	Lawrence	1,961 FTE
CITY-NEAR	Lawrence	Lawrence	730 FTE
CITY-NEAR	Lawrence Manufacturing	Lawrence	728 FTE
CITY-NEAR	New Balance Athletics Lawrence Mill	Lawrence	723 FTE
NAT-TCR	Milford High School	Highland, MI	3.6 TCR
NAT-TCR	Transamerican Auto Parts	Compton, CA	3.6 TCR
NAT-TCR	Newcomb and Company	Raleigh, NC	3.6 TCR
NAT-TCR	Commissioner of Public Works of the City of Greenville	Greenville, SC	3.6 TCR
NAT-SIZE	Crosstex - PA	Sharon, PA	49 FTE
NAT-SIZE	Yushiro Manufacturing America, Inc	Shelbyville, IN	49 FTE
NAT-SIZE	Salt Lake City UT Truss	Salt Lake City, UT	49 FTE
NAT-SIZE	40 Montrose	Montrose, CO	49 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: 2020, 2019, 2018. 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.