# Jones Mill Quarry

- **MSHA mine ID:** 0301586
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Stone NEC
- **Location:** Hot Spring, AR
- **Operator:** Martin Marietta Materials, Inc.
- **Controller:** Martin Marietta Materials Inc
- **Public source rows linked:** 3,687
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Martin Marietta Materials Inc (M00174) → Martin Marietta Materials, Inc. (L16197) → Jones Mill Quarry (0301586)**

Current identity source: `msha-mines`. This is a current snapshot, not a historical claim.

## Controller and operator valid-time history

- **Sam R  Clark → Mid-State Construction & Materials Inc:** 1984-10-01 through 1988-03-13; derived from co-tenure at mine 0301586; source `msha-controller-operator-history`.
- **Aggregate Industries PLC → Mid-State Construction & Materials Inc:** 1988-03-14 through 1993-03-15; derived from co-tenure at mine 0301586; source `msha-controller-operator-history`.
- **Nova Materials Inc → Mid-State Construction & Materials Inc:** 1993-03-16 through 1998-03-18; derived from co-tenure at mine 0301586; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Materials Inc:** 1998-03-19 through 2001-10-31; derived from co-tenure at mine 0301586; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Mid-State Const & Mat Inc.:** 2001-11-01 through 2005-05-18; derived from co-tenure at mine 0301586; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Materials, Inc.:** 2005-05-19 through current/open; derived from co-tenure at mine 0301586; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 17
- Interval anomalies: 0
- Valid-time bounds: inclusive; date granularity; null end means open-ended in the upstream history row; not independent proof of present control.
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 4 since 2021:** Accidents and injuries 33 historical accident/injury rows; 0 coded fatalities and 457 lost days across the published record.
2. **COMPLIANCE — 25 since 2021:** Violations and penalties 162 violation rows across the full record; 15 carry an S&S flag and $22,532 appears in current assessed amounts.
3. **HEALTH — 68 samples:** Occupational health samples 68 personal. 0 personal-sample rows have a published C/E ratio above 1; 0 noise rows have an action-level or PEL dose above 100%. These are separate measures, not a silica exceedance count. Silica results and sample status are shown separately.
4. **PRODUCTION — 0 tons:** Quarterly production and employment 31K employee hours and 41 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 17 linked rows:** Contests, conferences and decisions 6 contested-violation rows, 7 civil-penalty docket/decision rows, and 4 conference records linked by issuance number.
6. **CONTRACTORS — 26 linked entities:** Contractors Contractors are linked through this mine’s violation or accident records. Their production and hours cover all their operations, so they are not included in this mine’s totals.
7. **INSPECTIONS — 14 since 2021:** Inspections 75 inspection events and 2K published inspection hours across the historical record.

## EIA annual operating context

No matched record in the 2024 EIA coal-public workbook. This may be inapplicable for a non-coal operation.

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 56.12018 — Identification of power switches.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12018
- **30 CFR 56.20003 — Housekeeping.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **30 CFR 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.4201 — Inspection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **30 CFR 56.11002 — Handrails and toeboards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11002
- **30 CFR 56.14132 — Horns and backup alarms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **30 CFR 56.12025 — Grounding circuit enclosures.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12025
- **30 CFR 56.18002 — Examination of working places.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002

## Source coverage

- **Accident, Injuries, and Illnesses:** 33 rows; 2001-05-18 through 2026-06-13; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2008-12-19 through 2008-12-19; source ID `msha-addresses`
- **Assessed Violations:** 161 rows; 2000-06-07 through 2025-12-09; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 7 rows; 2001-07-13 through 2024-05-06; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 4 rows; 2004-04-26 through 2019-08-07; source ID `msha-conferences`
- **Contested Violations:** 6 rows; 2010-05-04 through 2023-08-15; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 2,320 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 490 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 1984-10-01 through 2005-05-19; source ID `msha-controller-operator-history`
- **Inspections:** 75 rows; 2000-05-15 through 2026-08-03; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 281 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 72 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Metal and Nonmetal Personal Health Samples:** 68 rows; 2004-08-25 through 2025-07-16; source ID `msha-personal-health-samples`
- **Violations:** 162 rows; 2000-06-07 through 2025-12-09; source ID `msha-violations`

## Caveats

- This is public-record decision support, not legal advice or an official MSHA record.
- Missing data can indicate no event, publication delay, an unresolved identity, or inapplicability.
- Contractor production data is entity-level and is not attributed to this mine.

## Alternate representations

- HTML: `/mines/jones-mill-quarry-0301586`
- JSON: `/api/v1/mines/jones-mill-quarry-0301586`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0301586/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0301586/relationships`
- MCP resource: `mine://0301586/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`