# CLAYTON COUNTY MINE SITE

- **MSHA mine ID:** 0901102
- **Status:** Abandoned
- **Type / commodity:** Surface / Crushed, Broken Granite
- **Location:** Clayton, GA
- **Operator:** Bluegrass Materials Company, LLC
- **Controller:** Martin Marietta Materials Inc
- **Public source rows linked:** 2,063
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Martin Marietta Materials Inc (M00174) → Bluegrass Materials Company, LLC (0113025) → CLAYTON COUNTY MINE SITE (0901102)**

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

## Controller and operator valid-time history

- **Blue Circle Industries Plc → Blue Circle Aggregates Inc:** 1997-03-01 through 2001-07-11; derived from co-tenure at mine 0901102; source `msha-controller-operator-history`.
- **Lafarge S A → Lafarge Aggregates Southeast:** 2001-07-12 through 2010-12-31; derived from co-tenure at mine 0901102; source `msha-controller-operator-history`.
- **Lafarge S A → Lafarge Building Materials, Inc.:** 2011-01-01 through 2013-03-28; derived from co-tenure at mine 0901102; source `msha-controller-operator-history`.
- **Panadero Aggregates Holdings, LLC → Bluegrass Materials Company, LLC:** 2013-03-29 through 2018-04-26; derived from co-tenure at mine 0901102; source `msha-controller-operator-history`.
- **Holcim Ltd → Lafarge Building Materials, Inc.:** 2015-07-10 through 2013-03-28; derived from co-tenure at mine 0901102; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Bluegrass Materials Company, LLC:** 2018-04-27 through current/open; derived from co-tenure at mine 0901102; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 16
- 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 15 historical accident/injury rows; 0 coded fatalities and 280 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 122 violation rows across the full record; 36 carry an S&S flag and $99,122 appears in current assessed amounts.
3. **HEALTH — 6 samples:** Occupational health samples 6 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 11K employee hours and 19 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 69 linked rows:** Contests, conferences and decisions 34 contested-violation rows, 34 civil-penalty docket/decision rows, and 1 conference records linked by issuance number.
6. **CONTRACTORS — 7 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 — 0 since 2021:** Inspections 52 inspection events and 686 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 56.12016 — Work on electrically-powered equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12016
- **30 CFR 56.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **30 CFR 56.14107 — Moving machine parts.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.12030 — Correction of dangerous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12030
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **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 56.18002 — 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
- **30 CFR 56.16003 — Storage of hazardous materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16003

## Source coverage

- **Accident, Injuries, and Illnesses:** 15 rows; 2001-01-03 through 2008-02-20; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2014-01-15 through 2014-01-15; source ID `msha-addresses`
- **Assessed Violations:** 122 rows; 2000-01-27 through 2011-08-04; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 34 rows; 2008-12-17 through 2012-01-04; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2005-06-13 through 2005-06-13; source ID `msha-conferences`
- **Contested Violations:** 34 rows; 2007-09-25 through 2009-12-15; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,311 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 281 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 1997-03-01 through 2013-03-29; source ID `msha-controller-operator-history`
- **Inspections:** 52 rows; 2000-01-27 through 2013-12-02; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 36 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 41 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:** 6 rows; 2001-08-28 through 2011-03-24; source ID `msha-personal-health-samples`
- **Violations:** 122 rows; 2000-01-27 through 2011-08-04; 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/clayton-county-mine-site-0901102`
- JSON: `/api/v1/mines/clayton-county-mine-site-0901102`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0901102/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0901102/relationships`
- MCP resource: `mine://0901102/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`