# Madison Mine

- **MSHA mine ID:** 2402467
- **Status:** Abandoned
- **Type / commodity:** Underground / Copper Ore NEC
- **Location:** Madison, MT
- **Operator:** Broadway Gold Corporation
- **Controller:** Broadway Gold Mining Ltd
- **Public source rows linked:** 569
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Broadway Gold Mining Ltd (0132921) → Broadway Gold Corporation (0150713) → Madison Mine (2402467)**

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

## Controller and operator valid-time history

- **Coronado Resources Ltd → Coronado Resources USA:** 2006-10-30 through 2016-11-15; derived from co-tenure at mine 2402467; source `msha-controller-operator-history`.
- **Nathan  Hunt et al → Groundhog Mining & Milling Co., LLC:** 2016-11-16 through 2017-04-09; derived from co-tenure at mine 2402467; source `msha-controller-operator-history`.
- **Delbert  Hunt et al → Groundhog Mining & Milling Co., LLC:** 2016-11-16 through 2017-04-09; derived from co-tenure at mine 2402467; source `msha-controller-operator-history`.
- **Broadway Gold Mining Ltd → Broadway Gold Corporation:** 2017-04-10 through current/open; derived from co-tenure at mine 2402467; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 10
- 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 — 0 since 2021:** Accidents and injuries 3 historical accident/injury rows; 0 coded fatalities and 181 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 117 violation rows across the full record; 21 carry an S&S flag and $21,240 appears in current assessed amounts.
3. **HEALTH — 11 samples:** Occupational health samples 8 personal; 3 area. 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 125 employee hours and 5 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 63 linked rows:** Contests, conferences and decisions 26 contested-violation rows, 26 civil-penalty docket/decision rows, and 11 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 — 0 since 2021:** Inspections 25 inspection events and 628 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 57.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12028
- **30 CFR 57.11041 — Landings for inclined ladderways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11041
- **30 CFR 57.11006 — Fixed ladder landings.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11006
- **30 CFR 57.8531 — Construction and maintenance of ventilation doors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-G/section-57.8531
- **30 CFR 49.3 — Alternative mine rescue capability for small and remote mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-49/subpart-A/section-49.3
- **30 CFR 56.12006 — Distribution boxes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12006
- **30 CFR 57.12002 — Controls and switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12002
- **30 CFR 57.12006 — Distribution boxes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12006
- **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 57.11012 — Protection for openings around travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11012
- **30 CFR 57.11051 — Escape routes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11051
- **30 CFR 57.4130 — Surface electric substations and liquid storage facilities.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4130

## Source coverage

- **Accident, Injuries, and Illnesses:** 3 rows; 2007-10-23 through 2011-10-27; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2019-10-29 through 2019-10-29; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 3 rows; 2008-07-01 through 2008-07-01; source ID `msha-area-samples`
- **Assessed Violations:** 115 rows; 2006-12-19 through 2017-01-09; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 26 rows; 2009-01-14 through 2011-11-08; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 11 rows; 2008-07-09 through 2008-07-29; source ID `msha-conferences`
- **Contested Violations:** 26 rows; 2007-11-27 through 2010-06-23; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 108 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 20 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 2006-10-30 through 2017-04-10; source ID `msha-controller-operator-history`
- **Inspections:** 25 rows; 2006-12-19 through 2017-01-25; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 80 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 21 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:** 8 rows; 2008-07-01 through 2011-03-23; source ID `msha-personal-health-samples`
- **Violations:** 117 rows; 2006-12-19 through 2017-01-09; 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/madison-mine-2402467`
- JSON: `/api/v1/mines/madison-mine-2402467`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2402467/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2402467/relationships`
- MCP resource: `mine://2402467/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`