# Tulsa Plant Pit #665

- **MSHA mine ID:** 3400108
- **Status:** Intermittent
- **Type / commodity:** Surface / Common Clays NEC
- **Location:** Tulsa, OK
- **Operator:** Acme Brick
- **Controller:** Berkshire Hathaway Inc
- **Public source rows linked:** 122
- **Source coverage:** 11 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Berkshire Hathaway Inc (M13643) → Acme Brick (L17877) → Tulsa Plant Pit #665 (3400108)**

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 3400108; source `msha-controller-operator-history`.
- **Berkshire Hathaway Inc → Acme Building Brands:** 2000-08-01 through 2001-12-31; derived from co-tenure at mine 3400108; source `msha-controller-operator-history`.
- **Berkshire Hathaway Inc → Acme Brick:** 2002-01-01 through current/open; derived from co-tenure at mine 3400108; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 9
- 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: 2026-10-17T05:35:58.500035+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 1 historical accident/injury rows; 0 coded fatalities and 60 lost days across the published record.
2. **COMPLIANCE — 5 since 2021:** Violations and penalties 9 violation rows across the full record; 1 carry an S&S flag and $1,118 appears in current assessed amounts.
3. **HEALTH — 6 samples:** Occupational health samples 6 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 435 employee hours and 1 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 2 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 2 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 — 7 since 2021:** Inspections 33 inspection events and 239 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 56.14100 — 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 46.5 — New miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.5
- **30 CFR 56.1000 — Notification of commencement of operations and closing of mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-A/section-56.1000
- **30 CFR 41.11 — Notification by operator.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-G/part-41/subpart-B/section-41.11
- **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 50.20 — Preparation and submission of MSHA Report Form 7000-1—Mine Accident, Injury, and Illness Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20
- **30 CFR 56.4200 — General requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4200
- **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 56.14206 — Securing movable parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14206

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2015-01-05 through 2015-01-05; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2026-01-12 through 2026-01-12; source ID `msha-addresses`
- **Assessed Violations:** 9 rows; 2011-01-06 through 2024-09-06; source ID `msha-assessed-violations`
- **Conferences:** 2 rows; 2025-02-21 through 2025-02-21; source ID `msha-conferences`
- **Controller and Operator History:** 3 rows; 1950-01-01 through 2002-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 33 rows; 2000-01-07 through 2026-03-17; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 13 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 44 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:** 6 rows; 2013-01-17 through 2021-12-21; source ID `msha-personal-health-samples`
- **Violations:** 9 rows; 2011-01-06 through 2024-09-06; 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/tulsa-plant-pit-665-3400108`
- JSON: `/api/v1/mines/tulsa-plant-pit-665-3400108`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3400108/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3400108/relationships`
- MCP resource: `mine://3400108/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`