DIAMOND MATERIALS, LLC is a site preparation contractors employer in KENNETT SQUARE, PA. Federal records show 1 OSHA inspection with 0 violations and $0 in penalties. All data sourced from public federal enforcement records.
Data sourced from OSHA, DOL WHD, MSHA, EPA ECHO, NLRB, FMCSA, OFLC, BLS, SAM.gov, CMS, USAspending, CPSC, NHTSA, and the UVA Corporate Prosecution Registry. Last updated: May 2, 2026.
DIAMOND MATERIALS, LLC
516 SCHOOLHOUSE ROAD, KENNETT SQUARE, PA, 19348
Parent: Noble Corp plc (107 locations)
Industry Benchmark
Data Insights
Inspection Breakdown
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Inspection History
No inspection records found.
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Data aggregated from public federal enforcement and program records (OSHA, WHD, MSHA, EPA, NLRB, FMCSA, OFLC, BLS, SAM.gov, CMS, USAspending, CPSC, NHTSA) plus the UVA Corporate Prosecution Registry. Employer profiles matched by name and location — matching errors may occur. Risk scores computed by FastDOL, not official government assessments. OSHA citations typically appear 3-8 months after the inspection, so very recent enforcement actions may not yet be reflected. Data provided as-is. Report a data error.
Part of a larger organization
DIAMOND MATERIALS, LLC is one of 107 establishments in our dataset that roll up under the parent organization Noble Corp plc. Noble Corp plc is a SEC public reporter (NE-WT), with most recent reported revenue of $3.3B.
Federal enforcement records on DIAMOND MATERIALS, LLC represent activity at this specific establishment. The full enforcement footprint of Noble Corp plc across all 107 of its tracked locations is viewable on the parent profile.
Other establishments operated by Noble Corp plc
- DIAMOND MATERIALS, LLC — NEWARK, DE — 2 federal records
- DIAMOND MANUFACTURING OF BLUFFTON, LTD — BLUFFTON, OH — 2 federal records
- DIAMOND MATERIALS, LLC — WILMINGTON, DE — 2 federal records
- DIAMOND MATTRESS INC — RANCHO DOMINGUEZ, CA — 2 federal records
- DIAMOND MATERIALS LLC — WILMINGTON, DE — 2 federal records
- DIAMOND M FIRE PROTECTION INC — COTTONWOOD, CA — 1 federal record
- 100826 - DIAMOND METAL PRODUCTS INC - MACHINING — ANDOVER, MN — 1 federal record
- DIAMOND MASONRY OF ILLINOIS, INC. — ROCKFORD, IL — 1 federal record
- NOBLE DRILLING SERVICES, INC. — BROWNSVILLE, TX — 1 federal record
- DIAMOND MANUFACTURING COMPANY — WYOMING, PA — 1 federal record
Other employers in Site Preparation Contractors within PA
- STELL ENTERPRISES INC. — PLAINS TOWNSHIP — 4 federal records
- SCHLOUCH INC. — PITTSTON — 3 federal records
- JAMES D. MORRISSEY, INC — BRISTOL — 3 federal records
- KRIGER CONSTRUCTION, INC. — HANOVER TOWNSHIP — 3 federal records
- JAMES D. MORRISSEY, INC — NORTH WALES — 3 federal records
- KRIGER CONSTRUCTION — WEST HAZLETON — 3 federal records
- SCHLOUCH, INCORPORATED — MACUNGIE — 3 federal records
- NEUBER ENVIRONMENTAL SERVICES, INC — PHOENIXVILLE — 3 federal records
- HAINES & KIBBLEHOUSE, INC — DOWNINGTOWN — 3 federal records
- SCHLOUCH, INCORPORATED — GAP — 3 federal records
Industry context
The Bureau of Labor Statistics reports an industry-average Total Recordable Incident Rate (TRIR) of 1.5 for the site preparation contractors sector, with a Days Away, Restricted, or Transferred (DART) rate of 1.
Activity timeline
No federal enforcement activity has been recorded against this establishment in the past 23 years.
Frequently Asked Questions
- What is DIAMOND MATERIALS, LLC's OSHA violation history?
- DIAMOND MATERIALS, LLC has 1 OSHA inspection on record with 0 violations and $0 in total penalties.
- How does DIAMOND MATERIALS, LLC's safety record compare to its industry?
- DIAMOND MATERIALS, LLC operates in the site preparation contractors industry. The industry average Total Recordable Incident Rate (TRIR) is 1.5.
About this data
This profile aggregates federal enforcement records on DIAMOND MATERIALS, LLC of KENNETT SQUARE, PA from 17 federal data sources. Records were found in 4 sources: OSHA workplace safety inspections, MSHA mine safety enforcement, SEC XBRL companyfacts (parent financials), and BLS industry safety benchmarks. The remaining 13 sources were checked and found no matching records: WHD, EPA, NLRB, OFLC, OFCCP, FMCSA, USAspending, SAM.gov, CMS, CPSC, NHTSA, UVA, SEC enforcement.
Establishments are matched across agencies using normalized employer name, state, and ZIP code. The dataset was last refreshed on May 2, 2026. DIAMOND MATERIALS, LLC resolves to the parent rollup Noble Corp plc, which operates 107 establishments in our dataset.
This profile may be incomplete if DIAMOND MATERIALS, LLCoperates under multiple legal names, files under variations our entity-matching rules don't yet cover, or maintains records below current matching thresholds. To report a missing record or correction, email corrections@fastdol.com.