# Bowles Sand & Gravel

- **MSHA mine ID:** 4104824
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Ellis, TX
- **Operator:** Buffalo Concrete of Texas
- **Controller:** Augusto  Huerta; Walter  Huerta
- **Public source rows linked:** 433
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Augusto  Huerta; Walter  Huerta (0106723) → Buffalo Concrete of Texas (0110765) → Bowles Sand & Gravel (4104824)**

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

## Controller and operator valid-time history

- **Michael  Bowles → Buffalo Concrete of Texas:** 2010-06-15 through 2012-11-07; derived from co-tenure at mine 4104824; source `msha-controller-operator-history`.
- **Augusto  Huerta et al → Buffalo Concrete of Texas:** 2012-11-08 through current/open; derived from co-tenure at mine 4104824; source `msha-controller-operator-history`.
- **Walter  Huerta et al → Buffalo Concrete of Texas:** 2012-11-08 through current/open; derived from co-tenure at mine 4104824; 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: 2026-10-17T05:35:58.500035+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 — 44 since 2021:** Violations and penalties 151 violation rows across the full record; 39 carry an S&S flag and $60,163 appears in current assessed amounts.
3. **HEALTH — 5 samples:** Occupational health samples 5 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 — 10 linked rows:** Contests, conferences and decisions 5 contested-violation rows, 5 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 — 21 since 2021:** Inspections 54 inspection events and 582 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 56.16005 — Securing gas cylinders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16005
- **30 CFR 56.14112 — Construction and maintenance of guards.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **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
- **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 56.12023 — 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 56.4101 — Warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101
- **30 CFR 56.4402 — Safety can use.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4402
- **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 56.11001 — 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 50.30 — Preparation and submission of MSHA Form 7000-2—Quarterly Employment and Coal Production Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-D/section-50.30
- **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

## Source coverage

- **Addresses of Record:** 1 rows; 2015-02-03 through 2015-02-03; source ID `msha-addresses`
- **Assessed Violations:** 143 rows; 2010-07-26 through 2025-12-16; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 5 rows; 2014-11-25 through 2014-11-25; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 5 rows; 2013-12-26 through 2013-12-27; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 25 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 6 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 2010-06-15 through 2010-06-15; source ID `msha-controller-operator-history`
- **Inspections:** 54 rows; 2010-07-26 through 2026-09-17; source ID `msha-inspections`
- **Mine Employment and Production — Yearly:** 34 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:** 5 rows; 2021-09-30 through 2024-11-13; source ID `msha-personal-health-samples`
- **Violations:** 151 rows; 2010-07-26 through 2026-09-17; 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/bowles-sand-gravel-4104824`
- JSON: `/api/v1/mines/bowles-sand-gravel-4104824`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4104824/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4104824/relationships`
- MCP resource: `mine://4104824/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`