# Garfield Sand & Gravel

- **MSHA mine ID:** 4103909
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Travis, TX
- **Operator:** Martin Marietta Materials Southwest, LLC
- **Controller:** Martin Marietta Materials Inc
- **Public source rows linked:** 806
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-18T09:31:49.615Z

## Current entity hierarchy

**Martin Marietta Materials Inc (M00174) → Martin Marietta Materials Southwest, LLC (0084984) → Garfield Sand & Gravel (4103909)**

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

## Controller and operator valid-time history

- **Blake A  Kuhlman → J C Evans Construction Company:** 1996-05-01 through 1999-09-06; derived from co-tenure at mine 4103909; source `msha-controller-operator-history`.
- **Cemex S A → Cemex Usa:** 1999-09-07 through 2003-07-09; derived from co-tenure at mine 4103909; source `msha-controller-operator-history`.
- **Cemex S A → Cemex Inc:** 2003-07-10 through 2011-07-29; derived from co-tenure at mine 4103909; source `msha-controller-operator-history`.
- **Texas Industries Inc → TXI Operations LP:** 2011-07-30 through 2014-07-01; derived from co-tenure at mine 4103909; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → TXI Operations LP:** 2014-07-02 through 2023-01-22; derived from co-tenure at mine 4103909; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Martin Marietta Materials Southwest, LLC:** 2023-01-23 through current/open; derived from co-tenure at mine 4103909; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 17
- 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: 2026-10-18T09:31:49.615908+00:00.

## Assessment signals

1. **SAFETY — 1 since 2021:** Accidents and injuries 9 historical accident/injury rows; 0 coded fatalities and 47 lost days across the published record.
2. **COMPLIANCE — 17 since 2021:** Violations and penalties 145 violation rows across the full record; 37 carry an S&S flag and $48,905 appears in current assessed amounts.
3. **HEALTH — 16 samples:** Occupational health samples 16 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 640 employee hours and 1 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 9 linked rows:** Contests, conferences and decisions 1 contested-violation rows, 1 civil-penalty docket/decision rows, and 7 conference records linked by issuance number.
6. **CONTRACTORS — 5 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 — 12 since 2021:** Inspections 70 inspection events and 738 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 56.18010 — First aid.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18010
- **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 56.14207 — Parking procedures for unattended equipment.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14207
- **30 CFR 56.4201 — Inspection.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201
- **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 56.15006 — 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
- **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 56.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008
- **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 46.9 — Records of training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.9

## Source coverage

- **Accident, Injuries, and Illnesses:** 9 rows; 2000-01-03 through 2023-12-05; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1996-10-16 through 1996-10-16; source ID `msha-addresses`
- **Assessed Violations:** 145 rows; 2001-05-02 through 2026-04-01; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 1 rows; 2013-09-16 through 2013-09-16; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 7 rows; 2007-04-11 through 2014-06-11; source ID `msha-conferences`
- **Contested Violations:** 1 rows; 2011-09-13 through 2011-09-13; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 111 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 31 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 6 rows; 1996-05-01 through 2023-01-23; source ID `msha-controller-operator-history`
- **Inspections:** 70 rows; 2001-05-02 through 2026-04-01; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 207 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 55 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:** 16 rows; 2002-06-26 through 2025-04-01; source ID `msha-personal-health-samples`
- **Violations:** 145 rows; 2001-05-02 through 2026-04-01; 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/garfield-sand-gravel-4103909`
- JSON: `/api/v1/mines/garfield-sand-gravel-4103909`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4103909/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4103909/relationships`
- MCP resource: `mine://4103909/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`