# Sylvatus Quarry

- **MSHA mine ID:** 4402962
- **Status:** Active
- **Type / commodity:** Surface / Dimension Quartzite
- **Location:** Wythe, VA
- **Operator:** Salem Stone Corp
- **Controller:** Doug  Dalton
- **Public source rows linked:** 1,608
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Doug  Dalton (M13395) → Salem Stone Corp (L06269) → Sylvatus Quarry (4402962)**

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

## Controller and operator valid-time history

- **Medusa Corp → State Contracting & Materials Division:** 1950-01-01 through 1978-12-31; derived from co-tenure at mine 4402962; source `msha-controller-operator-history`.
- **Crane Company → Medusa Aggregates Company:** 1979-01-01 through 1983-01-19; derived from co-tenure at mine 4402962; source `msha-controller-operator-history`.
- **Doug  Dalton → Salem Stone Corp:** 1983-01-20 through current/open; derived from co-tenure at mine 4402962; source `msha-controller-operator-history`.

- History rows: 3
- Typed edges: 9
- 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 — 5 since 2021:** Accidents and injuries 14 historical accident/injury rows; 0 coded fatalities and 129 lost days across the published record.
2. **COMPLIANCE — 11 since 2021:** Violations and penalties 115 violation rows across the full record; 24 carry an S&S flag and $19,101 appears in current assessed amounts.
3. **HEALTH — 69 samples:** Occupational health samples 69 personal. 7 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 13K employee hours and 22 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 7 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 7 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 — 17 since 2021:** Inspections 74 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 50.11 — Investigation.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-B/section-50.11
- **30 CFR 56.9200 — Transporting persons.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-H/section-56.9200
- **30 CFR 56.14100 — Safety defects; examination, correction and records.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14100
- **30 CFR 56.5001 — Exposure limits for airborne contaminants.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-D/section-56.5001
- **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 56.11012 — Protection for openings around travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-J/section-56.11012
- **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 56.13015 — Inspection of compressed-air receivers and other unfired pressure vessels.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-L/section-56.13015
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 14 rows; 2000-08-04 through 2026-08-26; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 1990-03-06 through 1990-03-06; source ID `msha-addresses`
- **Assessed Violations:** 114 rows; 2000-06-06 through 2025-07-23; source ID `msha-assessed-violations`
- **Conferences:** 7 rows; 2006-05-09 through 2012-04-30; source ID `msha-conferences`
- **Contractor Employment and Production — Quarterly:** 667 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 152 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 3 rows; 1950-01-01 through 1983-01-20; source ID `msha-controller-operator-history`
- **Inspections:** 74 rows; 2000-06-06 through 2026-09-15; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 312 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 79 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:** 69 rows; 2001-03-28 through 2026-01-13; source ID `msha-personal-health-samples`
- **Violations:** 115 rows; 2000-06-06 through 2025-07-23; 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/sylvatus-quarry-4402962`
- JSON: `/api/v1/mines/sylvatus-quarry-4402962`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/4402962/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/4402962/relationships`
- MCP resource: `mine://4402962/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`