MARYLAND ROCK INDUSTRIES, INC. is a construction sand and gravel mining employer in LEONARDTOWN, MD. 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 3, 2026.
MARYLAND ROCK INDUSTRIES, INC.
ABELL'S WHARF ROAD, LEONARDTOWN, MD, 20650
Parent: Vulcan Materials CO (332 locations)
212321 — Top companies in Construction Sand and Gravel Mining
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
MARYLAND ROCK INDUSTRIES, INC. is one of 332 establishments in our dataset that roll up under the parent organization Vulcan Materials CO. Vulcan Materials CO is a SEC public reporter (VMC), with most recent reported revenue of $7.8B.
Federal enforcement records on MARYLAND ROCK INDUSTRIES, INC. represent activity at this specific establishment. The full enforcement footprint of Vulcan Materials CO across all 332 of its tracked locations is viewable on the parent profile.
Other establishments operated by Vulcan Materials CO
- HEAVY MATERIALS, LLC — ST THOMAS, VI — 4 federal records
- SYAR INDUSTRIES, INC. — NAPA, CA — 3 federal records
- CALMAT CO — CHULA VISTA, CA — 3 federal records
- SYAR INDUSTRIES, INC. — HOPLAND, CA — 3 federal records
- CALMAT CO — BAKERSFIELD, CA — 3 federal records
- HEAVY MATERIALS LLC — FREDERIKSTED, VI — 3 federal records
- HEAVY MATERIALS — ST THOMAS, VI — 3 federal records
- CALMAT CO — IRWINDALE, CA — 3 federal records
- CALMAT — CORONA, CA — 3 federal records
- SYAR INDUSTRIES INC — HEALDSBURG, CA — 3 federal records
Other employers in Construction Sand and Gravel Mining within MD
- CHANEY ENTERPRISES LIMITED PARTNERSHIP — DAVIDSONVILLE — 1 federal record
- LAUREL SAND & GRAVEL INC — KEYMAR — 1 federal record
- AGGREGATE & DIRT SOLUTIONS, LLC — WALDORF — 1 federal record
- CHANEY ENTERPRISES — LOVEVILLE — 1 federal record
- MARYLAND ROCK INDUSTRIES, INC. — INDIAN HEAD
- GARDNER, EL INC. — BRANDYWINE
- AGGREGATE INDUSTRIES - MID ATLANTIC — LA PLATA
- PAUL W. JONES — FRUITLAND
- SLOAN MATERIALS L L C — LEONARDTOWN
Industry context
The Bureau of Labor Statistics reports an industry-average Total Recordable Incident Rate (TRIR) of 1.5 for the construction sand and gravel mining 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 22 years.
Frequently Asked Questions
- What is MARYLAND ROCK INDUSTRIES, INC.'s OSHA violation history?
- MARYLAND ROCK INDUSTRIES, INC. has 1 OSHA inspection on record with 0 violations and $0 in total penalties.
- How does MARYLAND ROCK INDUSTRIES, INC.'s safety record compare to its industry?
- MARYLAND ROCK INDUSTRIES, INC. operates in the construction sand and gravel mining industry. The industry average Total Recordable Incident Rate (TRIR) is 1.5.
About this data
This profile aggregates federal enforcement records on MARYLAND ROCK INDUSTRIES, INC. of LEONARDTOWN, MD from 17 federal data sources. Records were found in 3 sources: OSHA workplace safety inspections, SEC XBRL companyfacts (parent financials), and BLS industry safety benchmarks. The remaining 14 sources were checked and found no matching records: WHD, MSHA, 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 3, 2026. MARYLAND ROCK INDUSTRIES, INC. resolves to the parent rollup Vulcan Materials CO, which operates 332 establishments in our dataset.
This profile may be incomplete if MARYLAND ROCK INDUSTRIES, 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.