# Dunn Construction Company

- **MSHA mine ID:** 0103347
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Granite
- **Location:** Elmore, AL
- **Operator:** Dunn Construction Company
- **Controller:** Dunn Investment Company
- **Public source rows linked:** 788
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Dunn Investment Company (0169081) → Dunn Construction Company (0205493) → Dunn Construction Company (0103347)**

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

## Controller and operator valid-time history

- **Bradford H O'Dell → North Montgomery Materials LLC:** 2006-06-14 through 2025-08-28; derived from co-tenure at mine 0103347; source `msha-controller-operator-history`.
- **Dunn Investment Company → Dunn Construction Company:** 2025-08-29 through current/open; derived from co-tenure at mine 0103347; source `msha-controller-operator-history`.

- History rows: 2
- 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: 2026-10-13T11:19:05.459773+00:00.

## Assessment signals

1. **SAFETY — 1 since 2021:** Accidents and injuries 1 historical accident/injury rows; 0 coded fatalities and 1 lost days across the published record.
2. **COMPLIANCE — 14 since 2021:** Violations and penalties 102 violation rows across the full record; 23 carry an S&S flag and $23,013 appears in current assessed amounts.
3. **HEALTH — 10 samples:** Occupational health samples 10 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 15K employee hours and 24 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 60 linked rows:** Contests, conferences and decisions 30 contested-violation rows, 30 civil-penalty docket/decision rows, and 0 conference records linked by issuance number.
6. **CONTRACTORS — 3 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 — 11 since 2021:** Inspections 52 inspection events and 677 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 56.14107 — 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 56.9300 — Berms or guardrails.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300
- **30 CFR 56.11003 — Construction and maintenance of ladders.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11003
- **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 56.13011 — Air receiver tanks.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-L/section-56.13011
- **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 56.11001 — 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 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 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 56.14205 — Machinery, equipment, and tools.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14205

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2024-08-29 through 2024-08-29; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2006-12-18 through 2006-12-18; source ID `msha-addresses`
- **Assessed Violations:** 101 rows; 2007-06-06 through 2026-01-23; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 30 rows; 2009-04-27 through 2014-06-16; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 30 rows; 2008-05-06 through 2013-05-09; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 219 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 43 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 2006-06-14 through 2025-08-29; source ID `msha-controller-operator-history`
- **Inspections:** 52 rows; 2007-06-06 through 2026-09-11; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 156 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 40 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:** 10 rows; 2007-08-21 through 2024-02-07; source ID `msha-personal-health-samples`
- **Violations:** 102 rows; 2007-06-06 through 2026-09-11; 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/dunn-construction-company-0103347`
- JSON: `/api/v1/mines/dunn-construction-company-0103347`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/0103347/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/0103347/relationships`
- MCP resource: `mine://0103347/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`