# Arenero Estrella Inc

- **MSHA mine ID:** 5400290
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Basalt
- **Location:** Bayamon, PR
- **Operator:** Arenero Estrella Inc
- **Controller:** Carlos Ortiz  Brunet
- **Public source rows linked:** 424
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Carlos Ortiz  Brunet (M05645) → Arenero Estrella Inc (L08513) → Arenero Estrella Inc (5400290)**

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

## Controller and operator valid-time history

- **Carlos Ortiz  Brunet → Arenero Estrella Inc:** 1986-03-01 through current/open; derived from co-tenure at mine 5400290; source `msha-controller-operator-history`.

- History rows: 1
- Typed edges: 3
- 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 12 historical accident/injury rows; 0 coded fatalities and 336 lost days across the published record.
2. **COMPLIANCE — 1 since 2021:** Violations and penalties 59 violation rows across the full record; 24 carry an S&S flag and $8,220 appears in current assessed amounts.
3. **HEALTH — 23 samples:** Occupational health samples 23 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 4K employee hours and 7 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 16 linked rows:** Contests, conferences and decisions 4 contested-violation rows, 4 civil-penalty docket/decision rows, and 8 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 77 inspection events and 593 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 56.14101 — Brakes.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14101
- **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 56.20011 — Barricades and warning signs.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20011
- **30 CFR 56.14132 — Horns and backup alarms.** (2 retained recent rows) — 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.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.3130 — Wall, bank, and slope stability.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-B/section-56.3130
- **30 CFR 46.7 — New task training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.7
- **30 CFR 56.12030 — Correction of dangerous conditions.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12030

## Source coverage

- **Accident, Injuries, and Illnesses:** 12 rows; 2000-12-21 through 2013-03-11; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2025-10-20 through 2025-10-20; source ID `msha-addresses`
- **Assessed Violations:** 58 rows; 2000-03-13 through 2026-07-01; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 4 rows; 2007-12-04 through 2014-04-28; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 8 rows; 2000-03-17 through 2013-05-17; source ID `msha-conferences`
- **Contested Violations:** 4 rows; 2007-02-21 through 2013-04-24; source ID `msha-contested-violations`
- **Controller and Operator History:** 1 rows; 1986-03-01 through 1986-03-01; source ID `msha-controller-operator-history`
- **Inspections:** 77 rows; 2000-03-13 through 2026-07-06; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 138 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 38 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:** 23 rows; 2001-10-01 through 2026-01-29; source ID `msha-personal-health-samples`
- **Violations:** 59 rows; 2000-03-13 through 2026-07-01; 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/arenero-estrella-inc-5400290`
- JSON: `/api/v1/mines/arenero-estrella-inc-5400290`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/5400290/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/5400290/relationships`
- MCP resource: `mine://5400290/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`