# Atoka Quarry

- **MSHA mine ID:** 3402026
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Atoka, OK
- **Operator:** RK Hall LLC
- **Controller:** Summit Materials LLC
- **Public source rows linked:** 423
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Summit Materials LLC (M02046) → RK Hall LLC (0189633) → Atoka Quarry (3402026)**

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

## Controller and operator valid-time history

- **Jim E  Powell  et al → Eastok Inc:** 2006-11-28 through 2017-01-24; derived from co-tenure at mine 3402026; source `msha-controller-operator-history`.
- **Maggie L  Powell  et al → Eastok Inc:** 2006-11-28 through 2017-01-24; derived from co-tenure at mine 3402026; source `msha-controller-operator-history`.
- **Eric H  Bettis et al → Mid-States Materials, LLC:** 2017-01-25 through 2023-06-16; derived from co-tenure at mine 3402026; source `msha-controller-operator-history`.
- **Matt  McPherson et al → Mid-States Materials, LLC:** 2017-01-25 through 2023-06-16; derived from co-tenure at mine 3402026; source `msha-controller-operator-history`.
- **Summit Materials LLC → RK Hall LLC:** 2023-06-17 through current/open; derived from co-tenure at mine 3402026; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 11
- 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 — 1 since 2021:** Accidents and injuries 2 historical accident/injury rows; 0 coded fatalities and 370 lost days across the published record.
2. **COMPLIANCE — 15 since 2021:** Violations and penalties 44 violation rows across the full record; 9 carry an S&S flag and $6,697 appears in current assessed amounts.
3. **HEALTH — 16 samples:** Occupational health samples 16 personal. 1 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 7K employee hours and 10 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 2 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 1 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 — 13 since 2021:** Inspections 35 inspection events and 383 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 56.11003 — Construction and maintenance of ladders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11003
- **30 CFR 56.14207 — Parking procedures for unattended equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14207
- **30 CFR 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.5002 — Exposure monitoring.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-D/section-56.5002
- **30 CFR 56.5001 — Exposure limits for airborne contaminants.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-D/section-56.5001
- **30 CFR 56.14107 — Moving machine parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.4200 — General requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4200
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **30 CFR 56.14206 — Securing movable parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14206
- **30 CFR 56.11012 — Protection for openings around travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11012
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 2 rows; 2018-08-15 through 2022-03-17; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2022-05-26 through 2022-05-26; source ID `msha-addresses`
- **Assessed Violations:** 43 rows; 2007-05-31 through 2026-08-11; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2019-02-13 through 2019-02-13; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 1 rows; 2018-09-06 through 2018-09-06; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 103 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 34 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 2006-11-28 through 2023-06-17; source ID `msha-controller-operator-history`
- **Inspections:** 35 rows; 2007-04-02 through 2026-08-11; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 108 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 29 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:** 16 rows; 2009-09-09 through 2024-07-02; source ID `msha-personal-health-samples`
- **Violations:** 44 rows; 2007-05-31 through 2026-08-11; 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/atoka-quarry-3402026`
- JSON: `/api/v1/mines/atoka-quarry-3402026`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3402026/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3402026/relationships`
- MCP resource: `mine://3402026/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`