# EV, Ballard & Blackfoot Bridge Mines

- **MSHA mine ID:** 1001702
- **Status:** Abandoned
- **Type / commodity:** Surface / Phosphate Rock
- **Location:** Caribou, ID
- **Operator:** N.A. Degerstrom
- **Controller:** N A Degerstrom
- **Public source rows linked:** 1,444
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**N A Degerstrom (M00694) → N.A. Degerstrom (L00832) → EV, Ballard & Blackfoot Bridge Mines (1001702)**

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

## Controller and operator valid-time history

- **Dravo Corp & N A Degerstrom Inc → Dravo-Soda Springs:** 1985-09-01 through 2001-11-12; derived from co-tenure at mine 1001702; source `msha-controller-operator-history`.
- **Dravo Corp & N A Degerstrom Inc → Degerstrom Ventures:** 2001-11-13 through 2014-01-22; derived from co-tenure at mine 1001702; source `msha-controller-operator-history`.
- **N A Degerstrom → N.A. Degerstrom:** 2014-01-23 through current/open; derived from co-tenure at mine 1001702; 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 — 4 since 2021:** Accidents and injuries 32 historical accident/injury rows; 0 coded fatalities and 407 lost days across the published record.
2. **COMPLIANCE — 13 since 2021:** Violations and penalties 105 violation rows across the full record; 14 carry an S&S flag and $14,430 appears in current assessed amounts.
3. **HEALTH — 51 samples:** Occupational health samples 51 personal. 4 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 29K employee hours and 57 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 20 linked rows:** Contests, conferences and decisions 3 contested-violation rows, 3 civil-penalty docket/decision rows, and 14 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 — 13 since 2021:** Inspections 84 inspection events and 3K 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 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **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
- **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 56.14205 — Machinery, equipment, and tools.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14205
- **30 CFR 47.41 — Requirement for container labels.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.41
- **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 56.14101 — 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 56.4530 — Exits.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4530
- **30 CFR 56.14132 — Horns and backup alarms.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **30 CFR 48.28 — Annual refresher training of miners; minimum courses of instruction; hours of instruction.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.28

## Source coverage

- **Accident, Injuries, and Illnesses:** 32 rows; 2000-05-15 through 2024-12-09; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2026-03-09 through 2026-03-09; source ID `msha-addresses`
- **Assessed Violations:** 105 rows; 2000-02-03 through 2025-08-19; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 3 rows; 2018-02-14 through 2018-09-12; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 14 rows; 2000-06-22 through 2018-08-01; source ID `msha-conferences`
- **Contested Violations:** 3 rows; 2017-07-19 through 2018-01-17; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 788 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 178 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1985-09-01 through 2014-01-23; source ID `msha-controller-operator-history`
- **Inspections:** 84 rows; 2000-02-03 through 2025-08-19; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 24 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 52 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:** 51 rows; 2003-06-04 through 2025-08-21; source ID `msha-personal-health-samples`
- **Violations:** 105 rows; 2000-02-03 through 2025-08-19; 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/ev-ballard-blackfoot-bridge-mines-1001702`
- JSON: `/api/v1/mines/ev-ballard-blackfoot-bridge-mines-1001702`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1001702/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1001702/relationships`
- MCP resource: `mine://1001702/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`