# DUSHORE CONSTRUCTION MATERIALS

- **MSHA mine ID:** 3609000
- **Status:** Intermittent
- **Type / commodity:** Surface / Dimension Stone NEC
- **Location:** Sullivan, PA
- **Operator:** REXERS LLC
- **Controller:** Richard J Rexer
- **Public source rows linked:** 328
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Richard J Rexer (0112207) → REXERS LLC (0131917) → DUSHORE CONSTRUCTION MATERIALS (3609000)**

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

## Controller and operator valid-time history

- **John B  Haines IV et al → Haines & Kibblehouse Inc:** 2001-06-01 through 2014-02-19; derived from co-tenure at mine 3609000; source `msha-controller-operator-history`.
- **John R  Kibblehouse et al → Haines & Kibblehouse Inc:** 2001-06-01 through 2014-02-19; derived from co-tenure at mine 3609000; source `msha-controller-operator-history`.
- **Richard J Rexer → Rexers LLC:** 2014-02-20 through current/open; derived from co-tenure at mine 3609000; source `msha-controller-operator-history`.
- **Scott B Haines et al → Haines & Kibblehouse Inc:** 2023-01-25 through 2014-02-19; derived from co-tenure at mine 3609000; source `msha-controller-operator-history`.
- **John R Kibblehouse Jr et al → Haines & Kibblehouse Inc:** 2023-01-25 through 2014-02-19; derived from co-tenure at mine 3609000; source `msha-controller-operator-history`.
- **Harry Christian Budenz et al → Haines & Kibblehouse Inc:** 2023-01-25 through 2014-02-19; derived from co-tenure at mine 3609000; source `msha-controller-operator-history`.
- **James  Haines et al → Haines & Kibblehouse Inc:** 2023-01-25 through 2014-02-19; derived from co-tenure at mine 3609000; source `msha-controller-operator-history`.

- History rows: 7
- Typed edges: 12
- Interval anomalies: 4
- 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 9 historical accident/injury rows; 0 coded fatalities and 265 lost days across the published record.
2. **COMPLIANCE — 3 since 2021:** Violations and penalties 27 violation rows across the full record; 6 carry an S&S flag and $4,074 appears in current assessed amounts.
3. **HEALTH — 12 samples:** Occupational health samples 12 personal. 2 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 2K employee hours and 3 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 0 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 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 — 9 since 2021:** Inspections 37 inspection events and 444 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 56.9300 — 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 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
- **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 56.14101 — 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 56.14112 — 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 56.11001 — 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 56.16006 — Protection of gas cylinder valves.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16006
- **30 CFR 50.20 — Preparation and submission of MSHA Report Form 7000-1—Mine Accident, Injury, and Illness Report.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20
- **30 CFR 56.12018 — Identification of power switches.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12018
- **30 CFR 56.14130 — Roll-over protective structures (ROPS) and seat belts.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14130
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 9 rows; 2002-04-01 through 2011-12-20; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2014-03-24 through 2014-03-24; source ID `msha-addresses`
- **Assessed Violations:** 27 rows; 2002-04-17 through 2025-06-17; source ID `msha-assessed-violations`
- **Contractor Employment and Production — Quarterly:** 30 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 8 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 7 rows; 2001-06-01 through 2014-02-20; source ID `msha-controller-operator-history`
- **Inspections:** 37 rows; 2002-04-17 through 2026-08-31; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 133 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 36 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:** 12 rows; 2005-08-23 through 2026-09-01; source ID `msha-personal-health-samples`
- **Violations:** 27 rows; 2002-04-17 through 2025-06-17; 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/dushore-construction-materials-3609000`
- JSON: `/api/v1/mines/dushore-construction-materials-3609000`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3609000/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3609000/relationships`
- MCP resource: `mine://3609000/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`