# Gudelsky Materials

- **MSHA mine ID:** 1800728
- **Status:** Active
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Prince Georges, MD
- **Operator:** Gudelsky Materials
- **Controller:** John  Gudelsky
- **Public source rows linked:** 1,070
- **Source coverage:** 14 / 20
- **Generated:** 2026-10-17T06:17:15.228Z

## Current entity hierarchy

**John  Gudelsky (M02210) → Gudelsky Materials (L13122) → Gudelsky Materials (1800728)**

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

## Controller and operator valid-time history

- **John  Gudelsky  et al → Gudelsky Materials:** 1992-04-01 through current/open; derived from co-tenure at mine 1800728; source `msha-controller-operator-history`.

- History rows: 1
- Typed edges: 3
- 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 — 4 since 2021:** Accidents and injuries 10 historical accident/injury rows; 0 coded fatalities and 261 lost days across the published record.
2. **COMPLIANCE — 10 since 2021:** Violations and penalties 123 violation rows across the full record; 39 carry an S&S flag and $23,645 appears in current assessed amounts.
3. **HEALTH — 40 samples:** Occupational health samples 40 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 21K employee hours and 32 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 88 linked rows:** Contests, conferences and decisions 37 contested-violation rows, 51 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 — 16 since 2021:** Inspections 73 inspection events and 2K 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 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 56.14100 — Safety defects; examination, correction and records.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.14132 — Horns and backup alarms.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14132
- **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 56.18002 — 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 56.11002 — Handrails and toeboards.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11002
- **30 CFR 56.4230 — Self-propelled equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4230
- **30 CFR 56.14115 — Stationary grinding machines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14115
- **30 CFR 56.4203 — Extinguisher recharging or replacement.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4203
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 10 rows; 2007-11-05 through 2024-06-26; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2011-10-11 through 2011-10-11; source ID `msha-addresses`
- **Assessed Violations:** 121 rows; 2000-06-20 through 2026-08-18; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 51 rows; 2000-12-18 through 2019-03-08; source ID `msha-civil-penalty-dockets-decisions`
- **Contested Violations:** 37 rows; 2005-01-04 through 2018-10-31; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 460 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 74 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 1 rows; 1992-04-01 through 1992-04-01; source ID `msha-controller-operator-history`
- **Inspections:** 73 rows; 2000-06-19 through 2026-08-17; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 24 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 54 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:** 40 rows; 2002-08-21 through 2024-12-05; source ID `msha-personal-health-samples`
- **Violations:** 123 rows; 2000-06-20 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/gudelsky-materials-1800728`
- JSON: `/api/v1/mines/gudelsky-materials-1800728`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1800728/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1800728/relationships`
- MCP resource: `mine://1800728/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`