# VANCE QUARRY

- **MSHA mine ID:** 0103545
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Tuscaloosa, AL
- **Operator:** DAVIS MATERIALS, INC.
- **Controller:** Ronald H  Davis; Ronald T  Davis; Rhonda D  Robinson; Christopher H  Dav
- **Public source rows linked:** 242
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**Ronald H  Davis; Ronald T  Davis; Rhonda D  Robinson; Christopher H  Dav (0162061) → DAVIS MATERIALS, INC. (0176493) → VANCE QUARRY (0103545)**

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

## Controller and operator valid-time history

- **Rhonda D  Robinson et al → DAVIS MATERIALS, INC.:** 2021-01-05 through current/open; derived from co-tenure at mine 0103545; source `msha-controller-operator-history`.
- **Ronald H  Davis et al → DAVIS MATERIALS, INC.:** 2021-01-05 through current/open; derived from co-tenure at mine 0103545; source `msha-controller-operator-history`.
- **Christopher H  Davis et al → DAVIS MATERIALS, INC.:** 2021-01-05 through current/open; derived from co-tenure at mine 0103545; source `msha-controller-operator-history`.
- **Ronald T  Davis et al → DAVIS MATERIALS, INC.:** 2021-01-05 through current/open; derived from co-tenure at mine 0103545; source `msha-controller-operator-history`.

- History rows: 4
- 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 — 1 since 2021:** Accidents and injuries 1 historical accident/injury rows; 0 coded fatalities and 10 lost days across the published record.
2. **COMPLIANCE — 28 since 2021:** Violations and penalties 28 violation rows across the full record; 10 carry an S&S flag and $6,391 appears in current assessed amounts.
3. **HEALTH — 8 samples:** Occupational health samples 8 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 — 4 linked rows:** Contests, conferences and decisions 2 contested-violation rows, 2 civil-penalty docket/decision rows, and 0 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 — 30 since 2021:** Inspections 30 inspection events and 293 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 56.15020 — Life jackets and belts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15020
- **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 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 56.6306 — Loading, blasting, and security.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-E/section-56.6306
- **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 56.11001 — Safe access.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11001
- **30 CFR 46.5 — New miner training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.5
- **30 CFR 46.8 — Annual refresher training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.8
- **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 56.14101 — 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 56.11003 — 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

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2024-09-23 through 2024-09-23; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2023-03-06 through 2023-03-06; source ID `msha-addresses`
- **Assessed Violations:** 28 rows; 2021-01-06 through 2026-08-04; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 2 rows; 2022-11-16 through 2024-10-29; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 2 rows; 2022-04-21 through 2023-09-29; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 107 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 24 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 2021-01-05 through 2021-01-05; source ID `msha-controller-operator-history`
- **Inspections:** 30 rows; 2021-01-04 through 2026-08-04; source ID `msha-inspections`
- **Mine Employment and Production — Yearly:** 6 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:** 8 rows; 2022-09-27 through 2026-03-31; source ID `msha-personal-health-samples`
- **Violations:** 28 rows; 2021-01-06 through 2026-08-04; 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/vance-quarry-0103545`
- JSON: `/api/v1/mines/vance-quarry-0103545`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0103545/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0103545/relationships`
- MCP resource: `mine://0103545/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`