Diamond Materials Safety Record

Wilmington, DE · Construction

F

Significantly elevated violation rate. This employer's safety record is among the worst on file.

Last inspected 03/29/2022

Based on public OSHA records. How is this calculated? · Data updated March 2026

According to OSHA enforcement records, Diamond Materials in Wilmington, Delaware has 30 workplace safety violations across 5 inspections, with 22 classified as serious and $80,226 in total penalties. Safety grade: F (significantly elevated violations). OSHA records span 1998 to 2022.

Diamond Materials in Wilmington, Delaware has received an F safety grade, indicating a significantly elevated rate of workplace safety violations compared to other employers. Within the construction industry, this places Diamond Materials among the most frequently cited employers. An F grade is assigned when an employer's weighted violation score exceeds 6.0 per inspection, factoring in the severity of each citation.

22 of the 30 violations on record are classified as serious, meaning OSHA determined they posed a risk of death or serious physical harm. Workers at employers with F safety grades may want to understand their rights under OSHA regulations, including the right to file a complaint about unsafe working conditions without fear of retaliation. Delaware workers who have been injured on the job may also be eligible for workers' compensation benefits.

6.0 Diamond Materials violations/inspection
vs
2.4 Construction avg
Above industry average
View Construction industry report →
11 Violations (5 yr)
2 Inspections (5 yr)
7 Serious (5 yr)
$39,591 Penalties (5 yr)
All-time record: 30 violations, $80,226 in penalties across 5 inspections
30 Total Violations
5 Total Inspections
22 Total Serious
$80,226 Total Penalties
Serious?
7 ($26,394)
Other-than-Serious?
4 ($13,197)
1910.0023 Ladders
Cited in 2 inspections (5 total) since 2004
1910.1200 Hazard Communication
Cited in 2 inspections (4 total) since 2016
1926.0200 OSHA Standard
Cited in 2 inspections (4 total) since 2021
1926.0020 Construction Safety Training
Cited in 2 inspections (2 total) since 2021
1926.0021 OSHA Standard
Cited in 2 inspections (2 total) since 2021
Violations decreased 85% over the past 5 years (4 recent vs 26 prior).
OSHA initially proposed $109,366 in penalties for Diamond Materials, later reduced to $80,226 — a 27% reduction through informal settlement or contest. Learn how OSHA penalties work.
1910.0023 Ladders
5 citations $6,420
1926.0200 OSHA Standard
4 citations $13,197
1910.1200 Hazard Communication
4 citations $10,902
1910.0095 OSHA Standard
3 citations
1926.0021 OSHA Standard
2 citations $7,106

Workers' Compensation in Delaware

Workers injured on the job in Delaware may be entitled to medical coverage, temporary & permanent disability, death benefits, vocational rehabilitation.

This is general information about workers' compensation laws in Delaware, not legal advice. Consult a licensed attorney for your specific situation.

Were you injured at Diamond Materials?

This employer has 30 OSHA violations on record, including 22 classified as serious. If you've been hurt on the job, you may be entitled to compensation.

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No workplace accident investigations on file for Diamond Materials in OSHA records.

DateTypeLocationViolationsPenalties
03/29/2022 Referral? Wilmington, DE 4 $12,183
12/22/2021 Planned? Wilmington, DE 7 $27,408
07/08/2016 Complaint? Wilmington, DE 7 $36,881
09/30/2004 Planned? Wilmington, DE 12 $3,754
03/20/1998 Planned? Wilmington, DE 0 $0

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