# Lampasas Quarry

- **MSHA mine ID:** 4104693
- **Status:** Abandoned
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Burnet, TX
- **Operator:** Austin Aggregates
- **Controller:** CRH PLC
- **Public source rows linked:** 438
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**CRH PLC (M06183) → Austin Aggregates (L16618) → Lampasas Quarry (4104693)**

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

## Controller and operator valid-time history

- **MDU Resources Group Inc → Knife River Corporation-South:** 2007-10-11 through 2012-03-31; derived from co-tenure at mine 4104693; source `msha-controller-operator-history`.
- **Ashland Inc → Austin Aggregates:** 2012-04-01 through 2006-08-27; derived from co-tenure at mine 4104693; source `msha-controller-operator-history`.
- **CRH PLC → Austin Aggregates:** 2012-04-01 through current/open; derived from co-tenure at mine 4104693; source `msha-controller-operator-history`.
- **Knife River Corporation → Knife River Corporation-South:** 2023-06-01 through 2012-03-31; derived from co-tenure at mine 4104693; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 10
- Interval anomalies: 2
- 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 2 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 38 violation rows across the full record; 8 carry an S&S flag and $8,181 appears in current assessed amounts.
3. **HEALTH — 9 samples:** Occupational health samples 9 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 5K employee hours and 12 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 12 linked rows:** Contests, conferences and decisions 3 contested-violation rows, 3 civil-penalty docket/decision rows, and 6 conference records linked by issuance number.
6. **CONTRACTORS — 3 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 21 inspection events and 269 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 56.20003 — Housekeeping.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **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 56.12023 — Guarding electrical connections and resistor grids.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12023
- **30 CFR 56.14103 — Operators stations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14103
- **30 CFR 46.5 — New miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.5
- **30 CFR 46.3 — Training plans.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.3
- **30 CFR 56.14108 — Overhead drive belts.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14108
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 2 rows; 2010-08-29 through 2013-09-25; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2014-05-22 through 2014-05-22; source ID `msha-addresses`
- **Assessed Violations:** 36 rows; 2008-01-10 through 2013-11-20; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 3 rows; 2011-01-21 through 2013-08-08; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 6 rows; 2013-03-05 through 2013-03-05; source ID `msha-conferences`
- **Contested Violations:** 3 rows; 2010-05-11 through 2013-02-21; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 195 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 49 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 2007-10-11 through 2012-04-01; source ID `msha-controller-operator-history`
- **Inspections:** 21 rows; 2008-01-10 through 2013-11-20; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 54 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 16 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:** 9 rows; 2008-08-05 through 2013-04-24; source ID `msha-personal-health-samples`
- **Violations:** 38 rows; 2008-01-10 through 2013-11-20; 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/lampasas-quarry-4104693`
- JSON: `/api/v1/mines/lampasas-quarry-4104693`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4104693/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4104693/relationships`
- MCP resource: `mine://4104693/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`