# Thunderbird Wash Plant/Eagle Brand Sand

- **MSHA mine ID:** 0504763
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Montezuma, CO
- **Operator:** Stone Sand & Gravel, LLC
- **Controller:** Daren R  Stone; Kathy J  Stone
- **Public source rows linked:** 120
- **Source coverage:** 9 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Daren R  Stone; Kathy J  Stone (M10720) → Stone Sand & Gravel, LLC (0108065) → Thunderbird Wash Plant/Eagle Brand Sand (0504763)**

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

## Controller and operator valid-time history

- **Aryol W  Brumley et al → Haycamp Gravel:** 2003-03-10 through 2007-02-28; derived from co-tenure at mine 0504763; source `msha-controller-operator-history`.
- **Terry R  Gorsuch et al → Haycamp Gravel:** 2003-03-10 through 2007-02-28; derived from co-tenure at mine 0504763; source `msha-controller-operator-history`.
- **Kathy J  Stone et al → McStone Aggregates LLC:** 2007-03-01 through 2009-05-22; derived from co-tenure at mine 0504763; source `msha-controller-operator-history`.
- **Daren R  Stone et al → McStone Aggregates LLC:** 2007-03-01 through 2009-05-22; derived from co-tenure at mine 0504763; source `msha-controller-operator-history`.
- **Yvonne  McClellan et al → McStone Aggregates LLC:** 2009-05-23 through 2010-03-09; derived from co-tenure at mine 0504763; source `msha-controller-operator-history`.
- **Casey N  McClellan et al → McStone Aggregates LLC:** 2009-05-23 through 2010-03-09; derived from co-tenure at mine 0504763; source `msha-controller-operator-history`.
- **Daren R  Stone et al → Stone Sand & Gravel, LLC:** 2010-03-10 through current/open; derived from co-tenure at mine 0504763; source `msha-controller-operator-history`.
- **Kathy J  Stone et al → Stone Sand & Gravel, LLC:** 2010-03-10 through current/open; derived from co-tenure at mine 0504763; source `msha-controller-operator-history`.
- **Casey N  McClellan → McStone Aggregates LLC:** 2013-11-04 through 2010-03-09; derived from co-tenure at mine 0504763; source `msha-controller-operator-history`.

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

## Assessment signals

1. **SAFETY — 0 since 2021:** Accidents and injuries 1 historical accident/injury rows; 0 coded fatalities and 2 lost days across the published record.
2. **COMPLIANCE — 1 since 2021:** Violations and penalties 31 violation rows across the full record; 6 carry an S&S flag and $4,208 appears in current assessed amounts.
3. **HEALTH — 3 samples:** Occupational health samples 3 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 — No published quarter:** Quarterly production and employment The source remains registered, but no mine-keyed quarterly production row was published.
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 — 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 — 3 since 2021:** Inspections 25 inspection events and 277 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 56.1000 — 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 56.18013 — Emergency communications system.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18013
- **30 CFR 56.14107 — Moving machine parts.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **30 CFR 56.4201 — Inspection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **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 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **30 CFR 56.11012 — Protection for openings around travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11012
- **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 56.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2003-08-18 through 2003-08-18; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2017-08-10 through 2017-08-10; source ID `msha-addresses`
- **Assessed Violations:** 31 rows; 2004-06-02 through 2023-06-27; source ID `msha-assessed-violations`
- **Controller and Operator History:** 9 rows; 2003-03-10 through 2010-03-10; source ID `msha-controller-operator-history`
- **Inspections:** 25 rows; 2004-06-02 through 2023-06-27; source ID `msha-inspections`
- **Mine Employment and Production — Yearly:** 18 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:** 3 rows; 2010-06-08 through 2021-03-23; source ID `msha-personal-health-samples`
- **Violations:** 31 rows; 2004-06-02 through 2023-06-27; 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/thunderbird-wash-plant-eagle-brand-sand-0504763`
- JSON: `/api/v1/mines/thunderbird-wash-plant-eagle-brand-sand-0504763`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0504763/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0504763/relationships`
- MCP resource: `mine://0504763/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`