# MALVERN MINING

- **MSHA mine ID:** 0300132
- **Status:** Active
- **Type / commodity:** Surface / Fire Clay
- **Location:** Hot Spring, AR
- **Operator:** Acme Brick Company
- **Controller:** Berkshire Hathaway Inc
- **Public source rows linked:** 590
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Berkshire Hathaway Inc (M13643) → Acme Brick Company (L17877) → MALVERN MINING (0300132)**

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

## Controller and operator valid-time history

- **Justin Industries Inc → Acme Brick Company:** 1950-01-01 through 2000-07-31; derived from co-tenure at mine 0300132; source `msha-controller-operator-history`.
- **Berkshire Hathaway Inc → Acme Brick Company:** 2000-08-01 through current/open; derived from co-tenure at mine 0300132; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 6
- 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 6 historical accident/injury rows; 0 coded fatalities and 43 lost days across the published record.
2. **COMPLIANCE — 22 since 2021:** Violations and penalties 65 violation rows across the full record; 7 carry an S&S flag and $7,351 appears in current assessed amounts.
3. **HEALTH — 30 samples:** Occupational health samples 30 personal. 1 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 5K employee hours and 9 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 4 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 civil-penalty docket/decision rows, and 2 conference records linked by issuance number.
6. **CONTRACTORS — 2 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 55 inspection events and 706 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 56.4402 — Safety can use.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4402
- **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 46.9 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9
- **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 56.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.14130 — Roll-over protective structures (ROPS) and seat belts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14130
- **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 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 56.12032 — 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 56.12023 — Guarding electrical connections and resistor grids.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12023
- **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 56.13015 — Inspection of compressed-air receivers and other unfired pressure vessels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-L/section-56.13015

## Source coverage

- **Accident, Injuries, and Illnesses:** 6 rows; 2004-04-28 through 2025-07-07; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2024-11-12 through 2024-11-12; source ID `msha-addresses`
- **Assessed Violations:** 65 rows; 2002-07-11 through 2026-06-30; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2023-11-08 through 2023-11-08; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 2 rows; 2003-07-23 through 2004-04-12; source ID `msha-conferences`
- **Contested Violations:** 1 rows; 2022-09-27 through 2022-09-27; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 41 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 9 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 1950-01-01 through 2000-08-01; source ID `msha-controller-operator-history`
- **Inspections:** 55 rows; 2001-06-07 through 2026-06-30; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 256 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 55 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:** 30 rows; 2010-09-15 through 2025-09-16; source ID `msha-personal-health-samples`
- **Violations:** 65 rows; 2002-07-11 through 2026-06-30; 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/malvern-mining-0300132`
- JSON: `/api/v1/mines/malvern-mining-0300132`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0300132/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0300132/relationships`
- MCP resource: `mine://0300132/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`