SPECIALTY MINERALS INC. is a crushed and broken limestone mining and quarrying employer in LUCERNE VALLEY, CA. Federal records show 15 OSHA inspections with 29 violations and $13,340 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.
SPECIALTY MINERALS INC.
6565 MERIDIAN ROAD, LUCERNE VALLEY, CA, 92356
Parent: MINERALS TECHNOLOGIES INC (32 locations)
212312 — Top companies in Crushed and Broken Limestone Mining and Quarrying
EIN: 133678712
66 employees
Industry Benchmark
Data Insights
Inspection Breakdown
Peer Comparison
Environmental Compliance (EPA)
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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
SPECIALTY MINERALS INC. is one of 32 establishments in our dataset that roll up under the parent organization MINERALS TECHNOLOGIES INC. MINERALS TECHNOLOGIES INC is a SEC public reporter (MTX), with most recent reported revenue of $2.1B.
Federal enforcement records on SPECIALTY MINERALS INC. represent activity at this specific establishment. The full enforcement footprint of MINERALS TECHNOLOGIES INC across all 32 of its tracked locations is viewable on the parent profile.
Other establishments operated by MINERALS TECHNOLOGIES INC
- NANOCOR INC — ABERDEEN, MS — 3 federal records
- SPECIALTY MINERALS INC. — ADAMS, MA — 2 federal records
- 91880 - SPECIALTY MINERALS INC — CLOQUET, MN — 2 federal records
- Cetco Oilfield Services Company — Beckville, TX — 1 federal record
- NORTHDOWN INDUSTRIES INC. — PHOENIX, AZ — 1 federal record
- SPECIALTY MINERALS INC — CAMAS, WA — 1 federal record
- MINTEQ INTERNATIONAL INC. — BRYAN, OH — 1 federal record
- MINTEQ INTERNATIONAL INC. — CLEVELAND, OH — 1 federal record
- SPECIALTY MINERALS INC. — CANAAN, CT — 1 federal record
- NORTHDOWN INDUSTRIES, INC. — DYERSBURG, TN — 1 federal record
Other employers in Crushed and Broken Limestone Mining and Quarrying within CA
- LEHIGH SOUTHWEST CEMENT COMPANY — CUPERTINO — 4 federal records
- RIVERSIDE CEMENT — ORO GRANDE — 3 federal records
- GRANITE CONSTRUCTION COMPANY — SANTA YNEZ — 3 federal records
- LEHIGH SOUTHWEST CEMENT COMPANY — TEHACHAPI — 3 federal records
- LEHIGH SOUTHWEST CEMENT COMPANY — REDDING — 3 federal records
- OMYA CALIFORNIA INC — LUCERNE VALLEY — 3 federal records
- NATIONAL CEMENT COMPANY OF CALIFORNIA, INC. — LEBEC — 3 federal records
- MARIAH CONSTRUCTION — ORO GRANDE — 2 federal records
- LIME MOUNTAIN COMPANY — PASO ROBLES — 2 federal records
- BARNARD CONSTRUCTION COMPANY INC — LONE PINE — 2 federal records
Industry context
Within the crushed and broken limestone mining and quarrying industry in CA, SPECIALTY MINERALS INC. ranks in the 99th percentile of OSHA violation frequency across 1,679 comparable establishments. That places this employer among the highest-violation establishments in its peer set.
OSHA penalty totals rank in the 96th percentile of the same peer group. Inspection frequency ranks in the 96th percentile.
The Bureau of Labor Statistics reports an industry-average Total Recordable Incident Rate (TRIR) of 1.9 for the crushed and broken limestone mining and quarrying sector, with a Days Away, Restricted, or Transferred (DART) rate of 1.2. SPECIALTY MINERALS INC.'s self-reported DART rate is 1.47, which is above the industry average.
Activity timeline
Frequently Asked Questions
- What is SPECIALTY MINERALS INC.'s OSHA violation history?
- SPECIALTY MINERALS INC. has 15 OSHA inspections on record with 29 violations and $13,340 in total penalties.
- How does SPECIALTY MINERALS INC.'s safety record compare to its industry?
- SPECIALTY MINERALS INC. operates in the crushed and broken limestone mining and quarrying industry. The industry average Total Recordable Incident Rate (TRIR) is 1.9. SPECIALTY MINERALS INC.'s self-reported DART rate is 1.47 compared to an industry average of 1.2.
About this data
This profile aggregates federal enforcement records on SPECIALTY MINERALS INC. of LUCERNE VALLEY, CA from 17 federal data sources. Records were found in 5 sources: OSHA workplace safety inspections, MSHA mine safety enforcement, EPA ECHO environmental compliance, SEC XBRL companyfacts (parent financials), and BLS industry safety benchmarks. The remaining 12 sources were checked and found no matching records: WHD, 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. SPECIALTY MINERALS INC. resolves to the parent rollup MINERALS TECHNOLOGIES INC, which operates 32 establishments in our dataset.
This profile may be incomplete if SPECIALTY MINERALS INC.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.