# Newton County Quarry

- **MSHA mine ID:** 0900899
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Stone NEC
- **Location:** Newton, GA
- **Operator:** Martin Marietta Materials Inc.
- **Controller:** Martin Marietta Materials Inc
- **Public source rows linked:** 2,491
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Martin Marietta Materials Inc (M00174) → Martin Marietta Materials Inc. (L16197) → Newton County Quarry (0900899)**

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

## Controller and operator valid-time history

- **Jim Walter Corp → Georgia Marble Company:** 1979-01-01 through 1989-05-30; derived from co-tenure at mine 0900899; source `msha-controller-operator-history`.
- **Imerys S A → Georgia Marble Aggregates Corp:** 1989-05-31 through 1989-08-28; derived from co-tenure at mine 0900899; source `msha-controller-operator-history`.
- **Blue Circle Industries Plc → Blue Circle Aggregates Inc:** 1989-08-29 through 2001-07-11; derived from co-tenure at mine 0900899; source `msha-controller-operator-history`.
- **Lafarge S A → Lafarge Aggregates Southeast:** 2001-07-12 through 2010-12-31; derived from co-tenure at mine 0900899; source `msha-controller-operator-history`.
- **Lafarge S A → Lafarge Building Materials, Inc.:** 2011-01-01 through 2013-06-30; derived from co-tenure at mine 0900899; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Materials Inc.:** 2013-07-01 through current/open; derived from co-tenure at mine 0900899; source `msha-controller-operator-history`.
- **Holcim Ltd → Lafarge Building Materials, Inc.:** 2015-07-10 through 2013-06-30; derived from co-tenure at mine 0900899; source `msha-controller-operator-history`.

- History rows: 7
- Typed edges: 20
- Interval anomalies: 1
- 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 — 2 since 2021:** Accidents and injuries 17 historical accident/injury rows; 0 coded fatalities and 124 lost days across the published record.
2. **COMPLIANCE — 17 since 2021:** Violations and penalties 92 violation rows across the full record; 13 carry an S&S flag and $13,032 appears in current assessed amounts.
3. **HEALTH — 18 samples:** Occupational health samples 18 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 10K employee hours and 17 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 10 linked rows:** Contests, conferences and decisions 3 contested-violation rows, 3 civil-penalty docket/decision rows, and 4 conference records linked by issuance number.
6. **CONTRACTORS — 12 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 — 12 since 2021:** Inspections 68 inspection events and 1K 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 56.16005 — Securing gas cylinders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16005
- **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 56.12021 — Danger signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12021
- **30 CFR 56.20003 — Housekeeping.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **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 56.14211 — Blocking equipment in a raised position.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14211
- **30 CFR 46.5 — New miner training.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.5
- **30 CFR 56.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **30 CFR 56.12023 — Guarding electrical connections and resistor grids.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12023

## Source coverage

- **Accident, Injuries, and Illnesses:** 17 rows; 2001-07-02 through 2026-01-09; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2012-10-02 through 2012-10-02; source ID `msha-addresses`
- **Assessed Violations:** 91 rows; 2000-06-14 through 2026-06-24; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 3 rows; 2009-04-21 through 2013-06-26; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 4 rows; 2004-05-15 through 2020-09-11; source ID `msha-conferences`
- **Contested Violations:** 3 rows; 2008-02-18 through 2012-11-27; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,497 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 361 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 7 rows; 1979-01-01 through 2013-07-01; source ID `msha-controller-operator-history`
- **Inspections:** 68 rows; 2000-06-14 through 2026-06-24; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 261 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 67 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:** 18 rows; 2003-09-03 through 2026-02-19; source ID `msha-personal-health-samples`
- **Violations:** 92 rows; 2000-06-14 through 2026-06-24; 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/newton-county-quarry-0900899`
- JSON: `/api/v1/mines/newton-county-quarry-0900899`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0900899/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0900899/relationships`
- MCP resource: `mine://0900899/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`