# Sunset Quarries

- **MSHA mine ID:** 4100070
- **Status:** Active
- **Type / commodity:** Surface / Dimension Stone NEC
- **Location:** Burnet, TX
- **Operator:** Cold Spring Granite Company
- **Controller:** Patrick  Alexander; Michael  O'Connor
- **Public source rows linked:** 665
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Patrick  Alexander; Michael  O'Connor (0184723) → Cold Spring Granite Company (L00067) → Sunset Quarries (4100070)**

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

## Controller and operator valid-time history

- **Patrick  Alexander → Cold Spring Granite Company:** 1950-01-01 through 2024-05-20; derived from co-tenure at mine 4100070; source `msha-controller-operator-history`.
- **Michael  O'Connor → Cold Spring Granite Company:** 2024-05-21 through current/open; derived from co-tenure at mine 4100070; source `msha-controller-operator-history`.
- **Patrick  Alexander → Cold Spring Granite Company:** 2024-05-21 through current/open; derived from co-tenure at mine 4100070; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 6
- 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 — 7 since 2021:** Accidents and injuries 27 historical accident/injury rows; 0 coded fatalities and 438 lost days across the published record.
2. **COMPLIANCE — 32 since 2021:** Violations and penalties 125 violation rows across the full record; 26 carry an S&S flag and $23,630 appears in current assessed amounts.
3. **HEALTH — 21 samples:** Occupational health samples 21 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 10K employee hours and 19 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 35 linked rows:** Contests, conferences and decisions 15 contested-violation rows, 16 civil-penalty docket/decision rows, and 4 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 — 14 since 2021:** Inspections 62 inspection events and 920 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 56.9300 — Berms or guardrails.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300
- **30 CFR 56.14207 — Parking procedures for unattended equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14207
- **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 56.14132 — 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 56.14100 — 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 47.41 — Requirement for container labels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.41
- **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 62.171 — Audiometric test procedures.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.171
- **30 CFR 62.174 — Follow-up corrective measures when a standard threshold shift is detected.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.174
- **30 CFR 62.175 — Notification of results; reporting requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-M/part-62/section-62.175
- **30 CFR 56.20003 — Housekeeping.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **30 CFR 56.14115 — Stationary grinding machines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14115

## Source coverage

- **Accident, Injuries, and Illnesses:** 27 rows; 2000-09-29 through 2026-04-02; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1972-11-09 through 1972-11-09; source ID `msha-addresses`
- **Assessed Violations:** 123 rows; 2001-04-03 through 2026-08-06; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 16 rows; 2004-02-26 through 2025-05-08; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 4 rows; 2003-02-28 through 2025-12-23; source ID `msha-conferences`
- **Contested Violations:** 15 rows; 2010-04-13 through 2024-11-20; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 18 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 4 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1950-01-01 through 1950-01-01; source ID `msha-controller-operator-history`
- **Inspections:** 62 rows; 2000-08-16 through 2026-08-06; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 195 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 50 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:** 21 rows; 2009-10-28 through 2024-11-20; source ID `msha-personal-health-samples`
- **Violations:** 125 rows; 2001-04-03 through 2026-08-06; 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/sunset-quarries-4100070`
- JSON: `/api/v1/mines/sunset-quarries-4100070`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4100070/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4100070/relationships`
- MCP resource: `mine://4100070/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`