# Amrize Stringtown Quarry

- **MSHA mine ID:** 3400056
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Atoka, OK
- **Operator:** Amrize South Central Inc.
- **Controller:** Amrize Ltd
- **Public source rows linked:** 3,344
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Amrize Ltd (0193740) → Amrize South Central Inc. (L00632) → Amrize Stringtown Quarry (3400056)**

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

## Controller and operator valid-time history

- **Wilburn D  Amis Jr → Amis Materials Company:** 1950-01-01 through 1996-02-20; derived from co-tenure at mine 3400056; source `msha-controller-operator-history`.
- **Cel Industries Inc  et al → Amis/Otac:** 1996-02-21 through 1998-11-19; derived from co-tenure at mine 3400056; source `msha-controller-operator-history`.
- **Lattimore Properties Inc → Stringtown Materials LP:** 1998-11-20 through 2007-09-30; derived from co-tenure at mine 3400056; source `msha-controller-operator-history`.
- **Lattimore Properties Inc → Amrize South Central Inc.:** 2007-10-01 through 2011-03-30; derived from co-tenure at mine 3400056; source `msha-controller-operator-history`.
- **Holcim Ltd → Amrize South Central Inc.:** 2011-03-31 through 2015-07-09; derived from co-tenure at mine 3400056; source `msha-controller-operator-history`.
- **Holcim Ltd → Amrize South Central Inc.:** 2015-07-10 through 2025-06-22; derived from co-tenure at mine 3400056; source `msha-controller-operator-history`.
- **Amrize Ltd → Amrize South Central Inc.:** 2025-06-23 through current/open; derived from co-tenure at mine 3400056; source `msha-controller-operator-history`.

- History rows: 7
- Typed edges: 18
- 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 — 7 since 2021:** Accidents and injuries 57 historical accident/injury rows; 2 coded fatalities and 1,308 lost days across the published record.
2. **COMPLIANCE — 72 since 2021:** Violations and penalties 302 violation rows across the full record; 87 carry an S&S flag and $186,764 appears in current assessed amounts.
3. **HEALTH — 79 samples:** Occupational health samples 79 personal. 4 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 28K employee hours and 41 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 88 linked rows:** Contests, conferences and decisions 26 contested-violation rows, 38 civil-penalty docket/decision rows, and 24 conference records linked by issuance number.
6. **CONTRACTORS — 11 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 — 21 since 2021:** Inspections 108 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 46.7 — New task training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.7
- **30 CFR 56.14105 — Procedures during repairs or maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14105
- **30 CFR 56.12018 — Identification of power switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12018
- **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 56.14100 — Safety defects; examination, correction and records.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **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 56.14132 — Horns and backup alarms.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **30 CFR 56.14130 — Roll-over protective structures (ROPS) and seat belts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14130

## Source coverage

- **Accident, Injuries, and Illnesses:** 57 rows; 2000-02-04 through 2026-02-07; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1977-09-12 through 1977-09-12; source ID `msha-addresses`
- **Assessed Violations:** 294 rows; 2001-05-08 through 2026-05-11; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 38 rows; 2002-08-07 through 2013-07-22; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 24 rows; 2001-05-29 through 2017-10-31; source ID `msha-conferences`
- **Contested Violations:** 26 rows; 2004-06-08 through 2012-05-21; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,648 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 375 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 7 rows; 1950-01-01 through 2007-10-01; source ID `msha-controller-operator-history`
- **Inspections:** 108 rows; 2000-01-21 through 2026-06-25; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 306 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 78 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:** 79 rows; 2002-07-10 through 2026-02-24; source ID `msha-personal-health-samples`
- **Violations:** 302 rows; 2001-05-08 through 2026-06-26; 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/amrize-stringtown-quarry-3400056`
- JSON: `/api/v1/mines/amrize-stringtown-quarry-3400056`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3400056/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3400056/relationships`
- MCP resource: `mine://3400056/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`