# Tamms Plant

- **MSHA mine ID:** 1102051
- **Status:** Active
- **Type / commodity:** Facility / Misc. Metal Ore NEC
- **Location:** Alexander, IL
- **Operator:** Covia Specialty Minerals, Inc.
- **Controller:** Covia Holdings LLC
- **Public source rows linked:** 550
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Covia Holdings LLC (0159743) → Covia Specialty Minerals, Inc. (L08769) → Tamms Plant (1102051)**

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

## Controller and operator valid-time history

- **John  Norton → Tammsco Inc:** 1950-01-01 through 1984-03-14; derived from co-tenure at mine 1102051; source `msha-controller-operator-history`.
- **Avitar Industries Inc → Tammsco Inc:** 1984-03-15 through 1987-05-31; derived from co-tenure at mine 1102051; source `msha-controller-operator-history`.
- **S C R-Sibelco Nv et al → Unimin Specialty Minerals, Inc.:** 1987-06-01 through 2016-02-24; derived from co-tenure at mine 1102051; source `msha-controller-operator-history`.
- **S C R-Sibelco Nv et al → Unimin Corporation:** 2016-02-25 through 2018-06-26; derived from co-tenure at mine 1102051; source `msha-controller-operator-history`.
- **S C R-Sibelco Nv et al → Covia Specialty Minerals, Inc.:** 2018-06-27 through 2020-12-31; derived from co-tenure at mine 1102051; source `msha-controller-operator-history`.
- **Covia Holdings LLC → Unimin Specialty Minerals, Inc.:** 2021-01-01 through 2016-02-24; derived from co-tenure at mine 1102051; source `msha-controller-operator-history`.
- **Covia Holdings LLC → Unimin Corporation:** 2021-01-01 through 2018-06-26; derived from co-tenure at mine 1102051; source `msha-controller-operator-history`.
- **Covia Holdings LLC → Covia Specialty Minerals, Inc.:** 2021-01-01 through current/open; derived from co-tenure at mine 1102051; source `msha-controller-operator-history`.

- History rows: 8
- Typed edges: 18
- Interval anomalies: 2
- 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 — 5 since 2021:** Accidents and injuries 22 historical accident/injury rows; 0 coded fatalities and 496 lost days across the published record.
2. **COMPLIANCE — 4 since 2021:** Violations and penalties 20 violation rows across the full record; 0 carry an S&S flag and $2,205 appears in current assessed amounts.
3. **HEALTH — 138 samples:** Occupational health samples 122 personal; 16 area. 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 6K employee hours and 11 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 9 linked rows:** Contests, conferences and decisions 4 contested-violation rows, 4 civil-penalty docket/decision rows, and 1 conference records linked by issuance number.
6. **CONTRACTORS — 0 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 — 18 since 2021:** Inspections 65 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 62.175 — Notification of results; reporting requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.175
- **30 CFR 50.20-7 — Criteria—MSHA Form 7000-1, Section D.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20-7
- **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 56.12004 — Electrical conductors.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.4603 — Closure of valves.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4603
- **30 CFR 56.12019 — Access to stationary electrical equipment or switchgear.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12019
- **30 CFR 56.4130 — Electric substations and liquid storage facilities.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4130
- **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 56.16001 — Stacking and storage of materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16001
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 22 rows; 2000-02-24 through 2026-03-02; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1973-06-27 through 1973-06-27; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 16 rows; 2021-02-23 through 2021-02-23; source ID `msha-area-samples`
- **Assessed Violations:** 20 rows; 2000-06-06 through 2025-02-13; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 4 rows; 2010-09-13 through 2017-07-25; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2012-12-05 through 2012-12-05; source ID `msha-conferences`
- **Contested Violations:** 4 rows; 2009-08-12 through 2016-12-28; source ID `msha-contested-violations`
- **Controller and Operator History:** 8 rows; 1950-01-01 through 2018-06-27; source ID `msha-controller-operator-history`
- **Inspections:** 65 rows; 2000-06-06 through 2026-08-18; 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:** 122 rows; 2000-11-07 through 2026-09-09; source ID `msha-personal-health-samples`
- **Violations:** 20 rows; 2000-06-06 through 2025-02-13; 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/tamms-plant-1102051`
- JSON: `/api/v1/mines/tamms-plant-1102051`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1102051/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1102051/relationships`
- MCP resource: `mine://1102051/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`