# Hephzibah Plant

- **MSHA mine ID:** 0900149
- **Status:** Active
- **Type / commodity:** Surface / Kaolin and Ball Clay
- **Location:** Richmond, GA
- **Operator:** Covia Clay LLC
- **Controller:** Covia Holdings LLC
- **Public source rows linked:** 2,546
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Covia Holdings LLC (0159743) → Covia Clay LLC (0175153) → Hephzibah Plant (0900149)**

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

## Controller and operator valid-time history

- **Mc Dermott Inc → Babcock & Wilcox Co-Insulating Products Div:** 1950-01-01 through 1985-01-22; derived from co-tenure at mine 0900149; source `msha-controller-operator-history`.
- **Sued-Chemie AG → Albion Kaolin Company:** 1985-01-23 through 2000-06-20; derived from co-tenure at mine 0900149; source `msha-controller-operator-history`.
- **S C R-Sibelco Nv et al → Covia Holdings Corporation:** 2000-06-21 through 2020-12-31; derived from co-tenure at mine 0900149; source `msha-controller-operator-history`.
- **Covia Holdings LLC → Covia Holdings Corporation:** 2021-01-01 through 2020-12-31; derived from co-tenure at mine 0900149; source `msha-controller-operator-history`.
- **Covia Holdings LLC → Covia Clay LLC:** 2021-01-01 through current/open; derived from co-tenure at mine 0900149; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 13
- 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 — 9 since 2021:** Accidents and injuries 42 historical accident/injury rows; 0 coded fatalities and 160 lost days across the published record.
2. **COMPLIANCE — 31 since 2021:** Violations and penalties 273 violation rows across the full record; 73 carry an S&S flag and $49,349 appears in current assessed amounts.
3. **HEALTH — 53 samples:** Occupational health samples 53 personal. 2 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 34K employee hours and 64 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 30 linked rows:** Contests, conferences and decisions 14 contested-violation rows, 15 civil-penalty docket/decision rows, and 1 conference records linked by issuance number.
6. **CONTRACTORS — 10 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 — 31 since 2021:** Inspections 100 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 56.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **30 CFR 56.14207 — Parking procedures for unattended equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14207
- **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 56.4201 — 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 56.16005 — 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 56.12028 — 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 56.20003 — Housekeeping.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **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 56.12004 — Electrical conductors.** (4 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004

## Source coverage

- **Accident, Injuries, and Illnesses:** 42 rows; 2000-07-17 through 2026-09-02; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1976-07-04 through 1976-07-04; source ID `msha-addresses`
- **Assessed Violations:** 270 rows; 2000-02-15 through 2026-07-28; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 15 rows; 2003-07-25 through 2015-05-21; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2012-01-25 through 2012-01-25; source ID `msha-conferences`
- **Contested Violations:** 14 rows; 2003-08-19 through 2014-01-14; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 1,403 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 285 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 5 rows; 1950-01-01 through 2021-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 100 rows; 2000-02-15 through 2026-07-27; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 26 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 57 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:** 53 rows; 2000-11-28 through 2026-03-18; source ID `msha-personal-health-samples`
- **Violations:** 273 rows; 2000-02-15 through 2026-07-28; 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/hephzibah-plant-0900149`
- JSON: `/api/v1/mines/hephzibah-plant-0900149`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0900149/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0900149/relationships`
- MCP resource: `mine://0900149/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`