# Bridgman Plant & Pit

- **MSHA mine ID:** 2000668
- **Status:** Abandoned
- **Type / commodity:** Surface / Sand, Industrial NEC
- **Location:** Berrien, MI
- **Operator:** Technisand Inc
- **Controller:** Fairmount Santrol
- **Public source rows linked:** 484
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Fairmount Santrol (M05855) → Technisand Inc (L12289) → Bridgman Plant & Pit (2000668)**

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

## Controller and operator valid-time history

- **Russell E  Manley → Manley Brothers Of Indiana Inc:** 1950-01-01 through 1986-01-27; derived from co-tenure at mine 2000668; source `msha-controller-operator-history`.
- **Hepworth Plc → Manley Brothers Of Indiana Inc:** 1986-01-28 through 1991-07-31; derived from co-tenure at mine 2000668; source `msha-controller-operator-history`.
- **Fairmount Santrol → Technisand Inc:** 1991-08-01 through current/open; derived from co-tenure at mine 2000668; source `msha-controller-operator-history`.
- **Paul  Salt → Manley Brothers Of Indiana Inc:** 2013-12-01 through 1991-07-31; derived from co-tenure at mine 2000668; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 11
- 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: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 13 historical accident/injury rows; 0 coded fatalities and 242 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 65 violation rows across the full record; 9 carry an S&S flag and $6,585 appears in current assessed amounts.
3. **HEALTH — 18 samples:** Occupational health samples 18 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 413 employee hours and 4 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 0 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 4 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 — 0 since 2021:** Inspections 47 inspection events and 889 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 56.14132 — 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.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.12030 — Correction of dangerous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12030
- **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 56.12034 — Guarding around lights.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12034
- **30 CFR 46.12 — Responsibility for independent contractor training.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.12
- **30 CFR 46.9 — Records of training.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9

## Source coverage

- **Accident, Injuries, and Illnesses:** 13 rows; 2000-04-19 through 2011-10-14; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2013-04-15 through 2013-04-15; source ID `msha-addresses`
- **Assessed Violations:** 65 rows; 2000-11-28 through 2012-07-25; source ID `msha-assessed-violations`
- **Contractor Employment and Production — Quarterly:** 119 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 24 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 1950-01-01 through 1991-08-01; source ID `msha-controller-operator-history`
- **Inspections:** 47 rows; 2000-01-11 through 2013-04-30; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 100 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 27 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:** 18 rows; 2000-11-29 through 2011-12-21; source ID `msha-personal-health-samples`
- **Violations:** 65 rows; 2000-11-28 through 2012-07-25; 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/bridgman-plant-pit-2000668`
- JSON: `/api/v1/mines/bridgman-plant-pit-2000668`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2000668/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2000668/relationships`
- MCP resource: `mine://2000668/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`