# Black Rock Ranch Quarry

- **MSHA mine ID:** 4105514
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Lampasas, TX
- **Operator:** BC Materials, LLC
- **Controller:** John  Miller; Wade  Miller
- **Public source rows linked:** 288
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**John  Miller; Wade  Miller (0195401) → BC Materials, LLC (0097725) → Black Rock Ranch Quarry (4105514)**

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

## Controller and operator valid-time history

- **John W  Miller → BC Materials, LLC:** 2020-07-09 through 2024-10-21; derived from co-tenure at mine 4105514; source `msha-controller-operator-history`.
- **Wade  Miller et al → BC Materials, LLC:** 2024-10-22 through current/open; derived from co-tenure at mine 4105514; source `msha-controller-operator-history`.
- **John  Miller et al → BC Materials, LLC:** 2024-10-22 through current/open; derived from co-tenure at mine 4105514; 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 — 0 since 2021:** Accidents and injuries 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 46 since 2021:** Violations and penalties 46 violation rows across the full record; 9 carry an S&S flag and $10,727 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 12K employee hours and 18 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 28 linked rows:** Contests, conferences and decisions 14 contested-violation rows, 14 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 — 17 since 2021:** Inspections 18 inspection events and 276 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 47.41 — Requirement for container labels.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.41
- **30 CFR 56.11003 — Construction and maintenance of ladders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11003
- **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 56.12002 — Controls and switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12002
- **30 CFR 56.11001 — Safe access.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **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 56.14107 — Moving machine parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **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 56.15006 — Protective equipment and clothing for hazards and irritants.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15006

## Source coverage

- **Addresses of Record:** 1 rows; 2022-04-25 through 2022-04-25; source ID `msha-addresses`
- **Assessed Violations:** 39 rows; 2021-03-24 through 2026-02-24; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 14 rows; 2025-07-18 through 2025-07-18; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 14 rows; 2024-09-10 through 2026-02-24; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 78 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:** 3 rows; 2020-07-09 through 2020-07-09; source ID `msha-controller-operator-history`
- **Inspections:** 18 rows; 2020-08-25 through 2026-08-25; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 41 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 12 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Violations:** 46 rows; 2021-03-24 through 2026-08-25; 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/black-rock-ranch-quarry-4105514`
- JSON: `/api/v1/mines/black-rock-ranch-quarry-4105514`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4105514/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4105514/relationships`
- MCP resource: `mine://4105514/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`