# Lynnwood Farm

- **MSHA mine ID:** 4405172
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Rockingham, VA
- **Operator:** South River Stone LLC
- **Controller:** Salem Stone Corp; Cliftondale Ready Mix LLC
- **Public source rows linked:** 445
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Salem Stone Corp; Cliftondale Ready Mix LLC (0086495) → South River Stone LLC (0102286) → Lynnwood Farm (4405172)**

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

## Controller and operator valid-time history

- **Robert Brett House → West Sand & Gravel Company Inc:** 1979-01-01 through 2002-07-14; derived from co-tenure at mine 4405172; source `msha-controller-operator-history`.
- **Robert Brett House → Brett Aggregates Inc:** 2002-07-15 through 2008-06-23; derived from co-tenure at mine 4405172; source `msha-controller-operator-history`.
- **Aggregate Industries PLC → Mid-Atlantic Materials Inc:** 2008-06-24 through 2009-04-29; derived from co-tenure at mine 4405172; source `msha-controller-operator-history`.
- **Holcim Ltd → Mid-Atlantic Materials Inc:** 2009-04-30 through 2009-04-30; derived from co-tenure at mine 4405172; source `msha-controller-operator-history`.
- **Cliftondale Ready Mix LLC et al → South River Stone LLC:** 2009-05-01 through current/open; derived from co-tenure at mine 4405172; source `msha-controller-operator-history`.
- **Salem Stone Corp et al → South River Stone LLC:** 2009-05-01 through current/open; derived from co-tenure at mine 4405172; source `msha-controller-operator-history`.

- History rows: 6
- Typed edges: 15
- 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 — 0 since 2021:** Accidents and injuries 4 historical accident/injury rows; 0 coded fatalities and 13 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 85 violation rows across the full record; 21 carry an S&S flag and $19,864 appears in current assessed amounts.
3. **HEALTH — 19 samples:** Occupational health samples 19 personal. 1 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 0 employee hours and 0 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 63 linked rows:** Contests, conferences and decisions 23 contested-violation rows, 26 civil-penalty docket/decision rows, and 14 conference records linked by issuance number.
6. **CONTRACTORS — 0 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 — 0 since 2021:** Inspections 42 inspection events and 775 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 56.1000 — Notification of commencement of operations and closing of mines.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-A/section-56.1000
- **30 CFR 56.12032 — Inspection and cover plates.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12032
- **30 CFR 56.20003 — Housekeeping.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003
- **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 56.9300 — Berms or guardrails.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9300
- **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 56.14101 — 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 56.12004 — Electrical conductors.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **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 56.12034 — Guarding around lights.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12034
- **30 CFR 56.12025 — Grounding circuit enclosures.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12025

## Source coverage

- **Accident, Injuries, and Illnesses:** 4 rows; 2001-06-14 through 2012-10-12; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2013-10-17 through 2013-10-17; source ID `msha-addresses`
- **Assessed Violations:** 85 rows; 2000-02-07 through 2013-10-17; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 26 rows; 2004-09-23 through 2014-08-14; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 14 rows; 2000-02-15 through 2004-02-05; source ID `msha-conferences`
- **Contested Violations:** 23 rows; 2008-03-19 through 2013-02-06; source ID `msha-contested-violations`
- **Controller and Operator History:** 6 rows; 1979-01-01 through 2009-05-01; source ID `msha-controller-operator-history`
- **Inspections:** 42 rows; 2000-02-07 through 2013-10-17; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 112 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 27 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:** 19 rows; 2001-08-14 through 2012-01-25; source ID `msha-personal-health-samples`
- **Violations:** 85 rows; 2000-02-07 through 2013-10-17; 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/lynnwood-farm-4405172`
- JSON: `/api/v1/mines/lynnwood-farm-4405172`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4405172/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4405172/relationships`
- MCP resource: `mine://4405172/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`