DIAMOND MANUFACTURING OF BLUFFTON, LTD is a all other miscellaneous fabricated metal product manufacturing employer in BLUFFTON, OH. Federal records show 4 OSHA inspections with 5 violations and $8,000 in penalties. 1 workplace fatality investigation on record. 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 MANUFACTURING OF BLUFFTON, LTD

505 EAST JEFFERSON, BLUFFTON, OH, 45817

Parent: Noble Corp plc (107 locations)

332999 — Top companies in All Other Miscellaneous Fabricated Metal Product Manufacturing

EIN: 272450190

70 employees

Federal Enforcement

OSHA inspections

5 violations

$8,000 in penalties

Violations across 2 federal agencies

Enforcement actions from multiple agencies may indicate systemic compliance issues.

1 fatalities3 National Emphasis Program inspections2 OSHA follow-up inspections

Industry Benchmark

Industry Avg TRIR

2.6

Industry Avg DART

1.4

Self-Reported DART

0.0

Self-Reported TRIR

3.3

Industry rates from BLS SOII 2024. Self-reported rates from OSHA ITA Form 300A (employer self-reported).

OSHA Inspections

OSHA Violations

Total Penalties

$8,000

Trend

STABLE

WHD Cases

Back Wages Owed

Confidence

HIGH

SVEP Flag

Data Insights

History Span

14 years

Last Activity

8yr ago

Inspection Rate

0.3/yr

Violation Rate

0.4/yr

Violation Severity Mix

60% serious$1,600 avg per violation$2,000 avg per inspection

Active Agencies:

OSHANLRB$8,000 total across all agencies

TRIR vs Industry Avg

+0.7

Above industry average

DART vs Industry Avg

-1.4

Below industry average

Inspection Breakdown

Planned

Complaint

Complaint and accident-triggered inspections are stronger risk signals than routine planned inspections.

Violation rate: 50% of inspections

Recidivism: 2 inspections with serious+ violations

Peer Comparison

75%

Above average violations

vs 491 employers in same industry & state

Fewer violationsMore violations

Penalty Percentile

76%

Inspection Frequency Percentile

87%

Labor Relations (NLRB)

Total Cases

Unfair Labor Practice

National Labor Relations Board — unfair labor practice charges and union representation cases.

Motor Carrier Safety (FMCSA)

DOT Number

2306331

Operation Type

Federal Motor Carrier Safety Administration — DOT-regulated carrier registration and fleet data.

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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 MANUFACTURING OF BLUFFTON, LTD 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-WTA), with most recent reported revenue of $3.3B.

Federal enforcement records on DIAMOND MANUFACTURING OF BLUFFTON, LTD 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 MATERIALS LLC — WILMINGTON, DE — 2 federal records
DIAMOND MATERIALS, LLC — WILMINGTON, DE — 2 federal records
DIAMOND MATTRESS INC — RANCHO DOMINGUEZ, CA — 2 federal records
NOBLE DRILLING SERVICES, INC. — BROWNSVILLE, TX — 1 federal record
DIAMOND MATERIALS, LLC — KENNETT SQUARE, PA — 1 federal record
Diamond Mold — Salt Lake City, UT — 1 federal record
DIAMOND MANUFACTURING COMPANY — WYOMING, PA — 1 federal record
110110 - DIAMOND METAL PRODUCTS INC — ANDOVER, MN — 1 federal record
DIAMOND M FIRE PROTECTION INC — COTTONWOOD, CA — 1 federal record

Other employers in All Other Miscellaneous Fabricated Metal Product Manufacturing within OH

NOVA SERVICES INC. — TOLEDO — 2 federal records
TONY'S WELDING AND FABRICATION, LLC — WASHINGTON COURT HOUSE — 2 federal records
MELDRUM MECHANICAL SERVICES, INC. — TOLEDO — 2 federal records
GIRARD MACHINE COMPANY — GIRARD — 2 federal records
MEYER TOOL, INC. — CINCINNATI — 2 federal records
CONSOLIDATED METAL PRODUCTS, INC. — CINCINNATI — 2 federal records
G&S METAL PRODUCTS COMPANY, INC. — CLEVELAND — 2 federal records
THE ANDERSONS, INC — MAUMEE — 2 federal records
ALCOA ATEP, NILES — NILES — 2 federal records
SMP WELDING LLC — MENTOR — 2 federal records

Industry context

Within the all other miscellaneous fabricated metal product manufacturing industry in OH, DIAMOND MANUFACTURING OF BLUFFTON, LTD ranks in the 75th percentile of OSHA violation frequency across 491 comparable establishments.

OSHA penalty totals rank in the 76th percentile of the same peer group. Inspection frequency ranks in the 87th percentile.

The Bureau of Labor Statistics reports an industry-average Total Recordable Incident Rate (TRIR) of 2.6 for the all other miscellaneous fabricated metal product manufacturing sector, with a Days Away, Restricted, or Transferred (DART) rate of 1.4. DIAMOND MANUFACTURING OF BLUFFTON, LTD's self-reported DART rate is 0, which is below the industry average.

Activity timeline

No federal enforcement activity has been recorded against this establishment in the past 8 years.

Frequently Asked Questions

What is DIAMOND MANUFACTURING OF BLUFFTON, LTD's OSHA violation history?: DIAMOND MANUFACTURING OF BLUFFTON, LTD has 4 OSHA inspections on record with 5 violations and $8,000 in total penalties.
How does DIAMOND MANUFACTURING OF BLUFFTON, LTD's safety record compare to its industry?: DIAMOND MANUFACTURING OF BLUFFTON, LTD operates in the all other miscellaneous fabricated metal product manufacturing industry. The industry average Total Recordable Incident Rate (TRIR) is 2.6. DIAMOND MANUFACTURING OF BLUFFTON, LTD's self-reported DART rate is 0 compared to an industry average of 1.4.
Has DIAMOND MANUFACTURING OF BLUFFTON, LTD had any workplace fatalities?: Yes. Federal records show 1 fatality investigation involving DIAMOND MANUFACTURING OF BLUFFTON, LTD.

About this data

This profile aggregates federal enforcement records on DIAMOND MANUFACTURING OF BLUFFTON, LTD of BLUFFTON, OH from 17 federal data sources. Records were found in 5 sources: OSHA workplace safety inspections, NLRB labor relations cases, FMCSA motor carrier safety, SEC XBRL companyfacts (parent financials), and BLS industry safety benchmarks. The remaining 12 sources were checked and found no matching records: WHD, MSHA, EPA, OFLC, OFCCP, 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 MANUFACTURING OF BLUFFTON, LTD resolves to the parent rollup Noble Corp plc, which operates 107 establishments in our dataset. OSHA accident records on file for DIAMOND MANUFACTURING OF BLUFFTON, LTD include 1 fatality investigation.

This profile may be incomplete if DIAMOND MANUFACTURING OF BLUFFTON, LTDoperates 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.