# Beaver Creek Quarry

- **MSHA mine ID:** 1800109
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Washington, MD
- **Operator:** Laurel Sand & Gravel, Inc.
- **Controller:** Aggregate Management, Inc
- **Public source rows linked:** 1,806
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Aggregate Management, Inc (M10193) → Laurel Sand & Gravel, Inc. (L06490) → Beaver Creek Quarry (1800109)**

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

## Controller and operator valid-time history

- **H B Mellott Estate Inc → H B Mellott Estate Inc:** 1950-01-01 through 2007-08-31; derived from co-tenure at mine 1800109; source `msha-controller-operator-history`.
- **Lafarge S A → Lafarge Mid Atlantic, Inc.:** 2007-09-01 through 2009-10-05; derived from co-tenure at mine 1800109; source `msha-controller-operator-history`.
- **Lafarge S A → Lafarge Mid Atlantic, LLC:** 2009-10-06 through 2014-02-12; derived from co-tenure at mine 1800109; source `msha-controller-operator-history`.
- **Panadero Aggregates Holdings, LLC → Bluegrass Materials Company, LLC:** 2014-02-13 through 2018-04-26; derived from co-tenure at mine 1800109; source `msha-controller-operator-history`.
- **Martin Marietta Materials Inc → Bluegrass Materials Company, LLC:** 2018-04-27 through 2018-06-05; derived from co-tenure at mine 1800109; source `msha-controller-operator-history`.
- **Aggregate Management, Inc → Laurel Sand & Gravel, Inc.:** 2018-06-06 through current/open; derived from co-tenure at mine 1800109; source `msha-controller-operator-history`.
- **Jonathan  Schilowitz → H B Mellott Estate Inc:** 2022-04-05 through 2007-08-31; derived from co-tenure at mine 1800109; source `msha-controller-operator-history`.

- History rows: 7
- Typed edges: 19
- Interval anomalies: 1
- 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 — 2 since 2021:** Accidents and injuries 15 historical accident/injury rows; 0 coded fatalities and 274 lost days across the published record.
2. **COMPLIANCE — 8 since 2021:** Violations and penalties 122 violation rows across the full record; 26 carry an S&S flag and $46,299 appears in current assessed amounts.
3. **HEALTH — 58 samples:** Occupational health samples 58 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 11K employee hours and 25 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 17 linked rows:** Contests, conferences and decisions 7 contested-violation rows, 7 civil-penalty docket/decision rows, and 3 conference records linked by issuance number.
6. **CONTRACTORS — 6 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 — 14 since 2021:** Inspections 69 inspection events and 1K 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 46.7 — New task training.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-46/section-46.7
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.7002 — Equipment defects.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-F/section-56.7002
- **30 CFR 56.9314 — Trimming stockpile and muckpile faces.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9314
- **30 CFR 56.13015 — Inspection of compressed-air receivers and other unfired pressure vessels.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-L/section-56.13015
- **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 56.4102 — Spillage and leakage.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4102
- **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
- **30 CFR 56.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 15 rows; 2001-05-17 through 2022-06-22; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1995-06-25 through 1995-06-25; source ID `msha-addresses`
- **Assessed Violations:** 121 rows; 2000-02-23 through 2026-03-18; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 7 rows; 2013-04-22 through 2023-09-07; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 3 rows; 2006-10-30 through 2017-06-19; source ID `msha-conferences`
- **Contested Violations:** 7 rows; 2012-07-17 through 2023-02-14; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 821 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 177 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 7 rows; 1950-01-01 through 2018-06-06; source ID `msha-controller-operator-history`
- **Inspections:** 69 rows; 2000-02-22 through 2026-09-21; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 316 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 81 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:** 58 rows; 2002-09-11 through 2026-09-23; source ID `msha-personal-health-samples`
- **Violations:** 122 rows; 2000-02-23 through 2026-03-18; 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/beaver-creek-quarry-1800109`
- JSON: `/api/v1/mines/beaver-creek-quarry-1800109`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1800109/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1800109/relationships`
- MCP resource: `mine://1800109/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`