DIAMOND SHAMROCK REFINING COMPANY, L.P. is a petroleum refineries employer in THREE RIVERS, TX. Federal records show 2 OSHA inspections with 5 violations and $49,650 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 3, 2026.
DIAMOND SHAMROCK REFINING COMPANY, L.P.
301 WEST LEROY, THREE RIVERS, TX, 78071
Parent: QUANTUM CORP /DE/ (1,580 locations)
324110 — Top companies in Petroleum Refineries
EIN: 742691167
305 employees
Industry Benchmark
Data Insights
Inspection Breakdown
Peer Comparison
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▶SEC Enforcement(1)
$5,000,000 totallast: 2014-01-09
SEC Enforcement(1)
SEC Litigation Releases filed against QUANTUM CORP /DE/— every public-company employer profile shows the parent's SEC enforcement history. Source: sec.gov/litigation/litreleases.
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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 SHAMROCK REFINING COMPANY, L.P. is one of 1,580 establishments in our dataset that roll up under the parent organization QUANTUM CORP /DE/. QUANTUM CORP /DE/ is a SEC public reporter (QMCO), with most recent reported revenue of $274M.
Federal enforcement records on DIAMOND SHAMROCK REFINING COMPANY, L.P. represent activity at this specific establishment. The full enforcement footprint of QUANTUM CORP /DE/ across all 1,580 of its tracked locations is viewable on the parent profile.
Other establishments operated by QUANTUM CORP /DE/
- DIAMOND CHEMICAL COMPANY, INC. — EAST RUTHERFORD, NJ — 3 federal records
- DIAMOND WIRE SPRING COMPANY — PITTSBURGH, PA — 3 federal records
- DIAMOND SAND AND GRAVEL INC — SPARTA, NJ — 3 federal records
- Diamond Equipment Contracting Corporation — VIRGINIA BEACH, VA — 2 federal records
- Diamond D General Engineering — Woodland, CA — 2 federal records
- DIAMOND CRYSTAL BRANDS, INC — PERRYSBURG, OH — 2 federal records
- Diamond Trucking — Peru, IN — 2 federal records
- Diamond Transportation — Springfield, VA — 2 federal records
- DIAMOND PALACE HOTEL AND CASINO CORP — SAN JUAN, PR — 2 federal records
- DIAMOND CORING COMPANY, INC. — PALATINE, IL — 2 federal records
Other employers in Petroleum Refineries within TX
- PASADENA REFINING SYSTEM, INC. — PASADENA — 4 federal records
- DELEK REFINING, LTD. — TYLER — 3 federal records
- HOUSTON REFINING, LP — HOUSTON — 3 federal records
- PHILLIPS 66 SWEENY REFINERY — OLD OCEAN — 3 federal records
- SHELL CHEMICAL LP — DEER PARK — 3 federal records
- PHILLIPS 66 COMPANY — BORGER — 2 federal records
- MARATHON GALVESTON BAY REFINERY — TEXAS CITY — 2 federal records
- PHILLIPS 66 COMPANY — BORGER — 2 federal records
- CITGO REFINING AND CHEMICALS COMPANY L.P. — CORPUS CHRISTI — 2 federal records
- BUCKEYE TEXAS PROCESSING, LLC — CORPUS CHRISTI — 2 federal records
Industry context
Within the petroleum refineries industry in TX, DIAMOND SHAMROCK REFINING COMPANY, L.P. ranks in the 82th percentile of OSHA violation frequency across 227 comparable establishments. That places this employer among the highest-violation establishments in its peer set.
OSHA penalty totals rank in the 93th percentile of the same peer group. Inspection frequency ranks in the 64th percentile.
The Bureau of Labor Statistics reports an industry-average Total Recordable Incident Rate (TRIR) of 0.4 for the petroleum refineries sector, with a Days Away, Restricted, or Transferred (DART) rate of 0.2. DIAMOND SHAMROCK REFINING COMPANY, L.P.'s self-reported DART rate is 0, which is below the industry average.
Activity timeline
Frequently Asked Questions
- What is DIAMOND SHAMROCK REFINING COMPANY, L.P.'s OSHA violation history?
- DIAMOND SHAMROCK REFINING COMPANY, L.P. has 2 OSHA inspections on record with 5 violations and $49,650 in total penalties.
- How does DIAMOND SHAMROCK REFINING COMPANY, L.P.'s safety record compare to its industry?
- DIAMOND SHAMROCK REFINING COMPANY, L.P. operates in the petroleum refineries industry. The industry average Total Recordable Incident Rate (TRIR) is 0.4. DIAMOND SHAMROCK REFINING COMPANY, L.P.'s self-reported DART rate is 0 compared to an industry average of 0.2.
About this data
This profile aggregates federal enforcement records on DIAMOND SHAMROCK REFINING COMPANY, L.P. of THREE RIVERS, TX from 17 federal data sources. Records were found in 4 sources: OSHA workplace safety inspections, SEC Litigation Releases, SEC XBRL companyfacts (parent financials), and BLS industry safety benchmarks. The remaining 13 sources were checked and found no matching records: WHD, MSHA, EPA, NLRB, OFLC, OFCCP, FMCSA, USAspending, SAM.gov, CMS, CPSC, NHTSA, UVA.
Establishments are matched across agencies using normalized employer name, state, and ZIP code. The dataset was last refreshed on May 3, 2026. DIAMOND SHAMROCK REFINING COMPANY, L.P. resolves to the parent rollup QUANTUM CORP /DE/, which operates 1,580 establishments in our dataset.
This profile may be incomplete if DIAMOND SHAMROCK REFINING COMPANY, L.P.operates 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.