DIAMOND MATERIALS LLC
924 SOUTH HEALD STREET, WILMINGTON, DE 19801 · Construction
DIAMOND MATERIALS LLC in WILMINGTON, DE has been the subject of 2 OSHA workplace inspections and 14 citations since 2010, according to enforcement records from the U.S. Department of Labor. Total penalties assessed: $64,290. Industry sector: Construction. All enforcement data below is sourced from the DOL public enforcement databases at data.dol.gov.
Safety Assessment
DIAMOND MATERIALS LLC has been inspected 2 times by OSHA over 5 years. These inspections resulted in 14 violations, averaging 7.0 violations per inspection. Of these, 12 were classified as serious — indicating hazards that could cause death or serious harm. Compared to the Construction industry average of 2 inspections per employer, DIAMOND MATERIALS LLC has been inspected fewer frequently.
What the Data Says About DIAMOND MATERIALS LLC
The federal enforcement record for DIAMOND MATERIALS LLC in WILMINGTON, DE includes 2 OSHA inspections and 14 violations, translating to 7.00 violations per inspection. Of those violations, 12 (85.7%) were classified as serious, 0 (0.0%) as willful, and 0 (0.0%) as repeat. Serious violations denote hazards likely to cause death or serious physical harm; willful and repeat categories indicate intentional disregard or recurrence of previously cited hazards.
OSHA assessed $86,187 in initial penalties against this employer, later adjusted to a current total of $64,290 — a 25.4% reduction. Average penalty per inspection works out to $32,145. Against the Construction industry average of $6,657 per employer, this record runs above peers.
Inspection activity spans from 2016-07-08 to 2021-12-22, a window of roughly 5 years. This record draws directly from the U.S. Department of Labor's public enforcement data at data.dol.gov. Penalty amounts reflect final adjudicated figures after any settlement, informal conference, or formal contest. Workers, journalists, and researchers can use these figures to compare this employer's compliance posture against industry peers and to identify workplaces with elevated safety risks or repeat non-compliance.
OSHA Inspection History
Violation Breakdown
Serious violations involve hazards that could cause death or serious physical harm. Willful violations indicate intentional or knowing disregard of the law. Repeat violations are for hazards previously cited within the past 5 years.
Penalty Analysis
Penalties were reduced by $21,897 from the initial assessment of $86,187. Reductions may result from informal settlements, formal contests, or negotiated agreements with OSHA.
Industry Safety Context: Construction
How DIAMOND MATERIALS LLC compares to the Construction sector, which has 60,370 employers tracked by PlainWorker.
| Metric | DIAMOND MATERIALS LLC | Industry Avg |
|---|---|---|
| Inspections | 2 | 2.0 |
| Violations | 14 | 3.3 |
| Total Penalty | $64,290 | $6,657 |
| Avg Penalty per Inspection | $32,145 | $3,325 |
Related Data from Other Sources
See BLS salary data for Construction occupations on WageDex — including median wages, employment levels, and wage trends.
WageDex — wagedex.com →Look up DIAMOND MATERIALS LLC's composite safety grade on PlainSafetyScore — aggregated from OSHA, injury rates, and industry benchmarks.
PlainSafetyScore — plainsafetyscore.com →Explore BLS labor statistics for DE on PlainLabor — employment levels, unemployment rates, and workforce trends.
PlainLabor — plainlabor.com →Look up DIAMOND MATERIALS LLC's workforce composition on PlainEmploy — EEO-1 data including job categories and demographic breakdowns from EEOC filings.
PlainEmploy — plainemploy.com →Workplace Safety Guides
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Related Data Sources
Data Sources & Methodology
Data as of 2026. Source: U.S. Department of Labor (OSHA, WHD).
Source: OSHA Enforcement Data
Inspection and violation records from the Occupational Safety and Health Administration (OSHA), U.S. Department of Labor, covering the period 2010–2026. Includes inspection dates, violation types (serious, willful, repeat, other-than-serious), and penalty amounts. Penalties shown are current assessed amounts and may differ from original citations due to settlement, contest, or reduction.
Source: Wage and Hour Division (WHD)
Compliance actions from the WHD, covering enforcement of the Fair Labor Standards Act (FLSA), including minimum wage, overtime, and child labor violations. Back wages represent amounts owed to affected employees as determined by WHD investigations.
Employer Matching
Employers are matched across OSHA and WHD datasets by name, state, and city. Employers included in PlainWorker have 2 or more OSHA inspections or $1,000+ in WHD back wages. Data is updated monthly from data.dol.gov.