# MULCOA PLANT #1

- **MSHA mine ID:** 0900339
- **Status:** Active
- **Type / commodity:** Facility / Common Clays NEC
- **Location:** Sumter, GA
- **Operator:** Imerys Refractory Minerals USA Inc.
- **Controller:** Imerys S A
- **Public source rows linked:** 2,200
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Imerys S A (M11763) → Imerys Refractory Minerals USA Inc. (0171753) → MULCOA PLANT #1 (0900339)**

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

## Controller and operator valid-time history

- **Asea Brown Boveri Ltd (ABB) → Mullite Company Of America:** 1950-01-01 through 2004-01-04; derived from co-tenure at mine 0900339; source `msha-controller-operator-history`.
- **Imerys S A → Mullite Company Of America:** 2004-01-05 through 2020-04-30; derived from co-tenure at mine 0900339; source `msha-controller-operator-history`.
- **Imerys S A → Imerys Refractory Minerals USA Inc.:** 2020-07-01 through current/open; derived from co-tenure at mine 0900339; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 8
- 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 31 historical accident/injury rows; 0 coded fatalities and 659 lost days across the published record.
2. **COMPLIANCE — 16 since 2021:** Violations and penalties 249 violation rows across the full record; 53 carry an S&S flag and $160,977 appears in current assessed amounts.
3. **HEALTH — 82 samples:** Occupational health samples 82 personal. 5 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 25K employee hours and 46 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 76 linked rows:** Contests, conferences and decisions 38 contested-violation rows, 38 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 14 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 69 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 56.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **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 56.9315 — Dust control.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9315
- **30 CFR 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **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 56.4104 — Combustible waste.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4104
- **30 CFR 56.20003 — Housekeeping.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **30 CFR 56.12006 — Distribution boxes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12006
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 31 rows; 2000-02-12 through 2025-02-17; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1976-07-04 through 1976-07-04; source ID `msha-addresses`
- **Assessed Violations:** 249 rows; 2000-03-06 through 2026-01-29; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 38 rows; 2006-09-28 through 2014-12-05; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 38 rows; 2005-08-02 through 2013-05-07; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 947 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 226 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1950-01-01 through 2020-05-01; source ID `msha-controller-operator-history`
- **Inspections:** 69 rows; 2000-03-06 through 2026-06-24; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 212 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 54 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:** 82 rows; 2001-09-05 through 2025-09-09; source ID `msha-personal-health-samples`
- **Violations:** 249 rows; 2000-03-06 through 2026-01-29; 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/mulcoa-plant-1-0900339`
- JSON: `/api/v1/mines/mulcoa-plant-1-0900339`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0900339/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0900339/relationships`
- MCP resource: `mine://0900339/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`