# BALLGROUND MINE SITE

- **MSHA mine ID:** 0900955
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Stone NEC
- **Location:** Cherokee, GA
- **Operator:** Bluegrass Materials Company, LLC
- **Controller:** Martin Marietta Materials Inc
- **Public source rows linked:** 3,128
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Martin Marietta Materials Inc (M00174) → Bluegrass Materials Company, LLC (0113025) → BALLGROUND MINE SITE (0900955)**

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:** 1982-12-01 through 1989-05-30; derived from co-tenure at mine 0900955; 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 0900955; 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 0900955; source `msha-controller-operator-history`.
- **Lafarge S A → Lafarge Aggregates Southeast:** 2001-07-12 through 2010-12-31; derived from co-tenure at mine 0900955; source `msha-controller-operator-history`.
- **Lafarge S A → Lafarge Building Materials, Inc.:** 2011-01-01 through 2013-05-31; derived from co-tenure at mine 0900955; source `msha-controller-operator-history`.
- **Panadero Aggregates Holdings, LLC → Bluegrass Materials Company, LLC:** 2013-06-01 through 2018-04-26; derived from co-tenure at mine 0900955; source `msha-controller-operator-history`.
- **Holcim Ltd → Lafarge Building Materials, Inc.:** 2015-07-10 through 2013-05-31; derived from co-tenure at mine 0900955; 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 0900955; source `msha-controller-operator-history`.

- History rows: 8
- Typed edges: 22
- 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 — 1 since 2021:** Accidents and injuries 24 historical accident/injury rows; 0 coded fatalities and 55 lost days across the published record.
2. **COMPLIANCE — 11 since 2021:** Violations and penalties 133 violation rows across the full record; 23 carry an S&S flag and $23,953 appears in current assessed amounts.
3. **HEALTH — 33 samples:** Occupational health samples 33 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 14K employee hours and 26 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 17 linked rows:** Contests, conferences and decisions 6 contested-violation rows, 6 civil-penalty docket/decision rows, and 5 conference records linked by issuance number.
6. **CONTRACTORS — 23 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 — 16 since 2021:** Inspections 80 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 56.14112 — 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 46.6 — Newly hired experienced miner training.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.6
- **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 56.14132 — 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 56.4201 — Inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **30 CFR 56.4101 — Warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101
- **30 CFR 50.10 — Immediate notification.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-B/section-50.10

## Source coverage

- **Accident, Injuries, and Illnesses:** 24 rows; 2000-06-21 through 2022-09-20; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1982-12-01 through 1982-12-01; source ID `msha-addresses`
- **Assessed Violations:** 130 rows; 2000-04-25 through 2023-11-07; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 6 rows; 2010-05-25 through 2020-05-27; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 5 rows; 2008-01-18 through 2020-01-13; source ID `msha-conferences`
- **Contested Violations:** 6 rows; 2008-04-30 through 2019-09-18; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,843 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 459 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 8 rows; 1982-12-01 through 2013-06-01; source ID `msha-controller-operator-history`
- **Inspections:** 80 rows; 2000-04-25 through 2026-09-28; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 318 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 81 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:** 33 rows; 2001-10-16 through 2026-03-17; source ID `msha-personal-health-samples`
- **Violations:** 133 rows; 2000-04-25 through 2026-09-28; 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/ballground-mine-site-0900955`
- JSON: `/api/v1/mines/ballground-mine-site-0900955`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0900955/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0900955/relationships`
- MCP resource: `mine://0900955/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`