# Cobb Land Trust

- **MSHA mine ID:** 3400687
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Texas, OK
- **Operator:** H&H Sand and Gravel LLC
- **Controller:** Arthur G  Hatfield
- **Public source rows linked:** 580
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Arthur G  Hatfield (0112481) → H&H Sand and Gravel LLC (0179493) → Cobb Land Trust (3400687)**

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

## Controller and operator valid-time history

- **Robert R  Behne → R R Behne Sand & Gravel:** 1950-01-01 through 1994-01-03; derived from co-tenure at mine 3400687; source `msha-controller-operator-history`.
- **Ted R  Behne → Behne Construction Company Inc:** 1994-01-04 through 2014-03-18; derived from co-tenure at mine 3400687; source `msha-controller-operator-history`.
- **Arthur G  Hatfield → Texas County Redi-Mix LLC:** 2014-03-19 through 2021-10-27; derived from co-tenure at mine 3400687; source `msha-controller-operator-history`.
- **Arthur G  Hatfield → H&H Sand and Gravel LLC:** 2021-10-28 through current/open; derived from co-tenure at mine 3400687; source `msha-controller-operator-history`.

- History rows: 4
- Typed edges: 12
- 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 — 11 since 2021:** Violations and penalties 85 violation rows across the full record; 19 carry an S&S flag and $33,018 appears in current assessed amounts.
3. **HEALTH — 4 samples:** Occupational health samples 4 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 653 employee hours and 3 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 23 linked rows:** Contests, conferences and decisions 8 contested-violation rows, 7 civil-penalty docket/decision rows, and 8 conference records linked by issuance number.
6. **CONTRACTORS — 2 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 — 10 since 2021:** Inspections 54 inspection events and 524 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.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.41
- **30 CFR 56.11012 — Protection for openings around travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11012
- **30 CFR 56.12028 — Testing grounding systems.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **30 CFR 56.9301 — Dump site restraints.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9301
- **30 CFR 56.14112 — Construction and maintenance of guards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14112
- **30 CFR 56.14206 — Securing movable parts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14206
- **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 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 56.18002 — Examination of working places.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002
- **30 CFR 56.4101 — Warning signs.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101

## Source coverage

- **Addresses of Record:** 1 rows; 2024-02-06 through 2024-02-06; source ID `msha-addresses`
- **Assessed Violations:** 85 rows; 2001-08-28 through 2026-08-18; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 7 rows; 2011-07-07 through 2012-10-03; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 8 rows; 2013-08-06 through 2015-03-20; source ID `msha-conferences`
- **Contested Violations:** 8 rows; 2010-04-20 through 2011-10-27; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 55 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 16 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 1950-01-01 through 2021-10-28; source ID `msha-controller-operator-history`
- **Inspections:** 54 rows; 2000-01-19 through 2026-08-18; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 200 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 52 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:** 4 rows; 2013-10-29 through 2024-04-24; source ID `msha-personal-health-samples`
- **Violations:** 85 rows; 2001-08-28 through 2026-08-18; 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/cobb-land-trust-3400687`
- JSON: `/api/v1/mines/cobb-land-trust-3400687`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3400687/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3400687/relationships`
- MCP resource: `mine://3400687/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`