# Mystic Eagle Quarry

- **MSHA mine ID:** 0504553
- **Status:** Abandoned
- **Type / commodity:** Underground / Crushed, Broken Marble
- **Location:** Pitkin, CO
- **Operator:** Mystic Eagle Group, LLC
- **Controller:** Mystic Eagle Quarry LLC; Mystic Eagle Investors LLC
- **Public source rows linked:** 176
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Mystic Eagle Quarry LLC; Mystic Eagle Investors LLC (0131761) → Mystic Eagle Group, LLC (0149813) → Mystic Eagle Quarry (0504553)**

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

## Controller and operator valid-time history

- **Congdon Robert → Crystal Valley Alabaster:** 1994-11-01 through 1998-07-21; derived from co-tenure at mine 0504553; source `msha-controller-operator-history`.
- **Congdon Robert & Tom Swint → Avalanche Creek Marble & Alabaster Llc:** 1998-07-22 through 2003-05-31; derived from co-tenure at mine 0504553; source `msha-controller-operator-history`.
- **Robert L  Congdon Et Al → White Banks Inc.:** 2003-06-01 through 2017-01-31; derived from co-tenure at mine 0504553; source `msha-controller-operator-history`.
- **Julie C  Otis-Skinner Et Al → White Banks Inc.:** 2003-06-01 through 2017-01-31; derived from co-tenure at mine 0504553; source `msha-controller-operator-history`.
- **Mystic Eagle Quarry LLC et al → Mystic Eagle Group, LLC:** 2017-02-01 through current/open; derived from co-tenure at mine 0504553; source `msha-controller-operator-history`.
- **Mystic Eagle Investors LLC et al → Mystic Eagle Group, LLC:** 2017-02-01 through current/open; derived from co-tenure at mine 0504553; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 14
- 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 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 20 violation rows across the full record; 2 carry an S&S flag and $2,524 appears in current assessed amounts.
3. **HEALTH — 0 samples:** Occupational health samples No published samples. 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 0 employee hours and 0 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 4 linked rows:** Contests, conferences and decisions 2 contested-violation rows, 2 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 1 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 8 inspection events and 115 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 57.18010 — First aid.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-Q/section-57.18010
- **30 CFR 57.4533 — Mine opening vicinity.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4533
- **30 CFR 57.20032 — Two-way communication equipment for underground operations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-S/section-57.20032
- **30 CFR 57.12004 — Electrical conductors.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12004
- **30 CFR 57.12032 — Inspection and cover plates.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12032
- **30 CFR 57.4601 — Oxygen cylinder storage.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4601
- **30 CFR 57.4402 — Safety can use.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-C/section-57.4402
- **30 CFR 57.12034 — Guarding around lights.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12034

## Source coverage

- **Addresses of Record:** 1 rows; 2019-10-22 through 2019-10-22; source ID `msha-addresses`
- **Assessed Violations:** 20 rows; 2003-10-08 through 2017-05-23; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 2 rows; 2005-09-27 through 2005-09-27; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 2 rows; 2003-10-08 through 2003-10-08; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 77 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 21 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 1994-11-01 through 2017-02-01; source ID `msha-controller-operator-history`
- **Inspections:** 8 rows; 2003-09-16 through 2020-01-22; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 16 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 2 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Violations:** 20 rows; 2003-10-08 through 2017-05-23; 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/mystic-eagle-quarry-0504553`
- JSON: `/api/v1/mines/mystic-eagle-quarry-0504553`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0504553/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0504553/relationships`
- MCP resource: `mine://0504553/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`