# Black 17

- **MSHA mine ID:** 3304643
- **Status:** Abandoned
- **Type / commodity:** Underground / Crushed, Broken Limestone NEC
- **Location:** Muskingum, OH
- **Operator:** Shelly Materials Inc
- **Controller:** CRH PLC
- **Public source rows linked:** 508
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**CRH PLC (M06183) → Shelly Materials Inc (L17597) → Black 17 (3304643)**

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

## Controller and operator valid-time history

- **Jeffrey R  Sidwell → Sidwell Materials Inc.:** 2010-03-01 through 2013-01-14; derived from co-tenure at mine 3304643; source `msha-controller-operator-history`.
- **CRH PLC → Shelly Materials Inc:** 2013-01-15 through current/open; derived from co-tenure at mine 3304643; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 6
- 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 2 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 23 violation rows across the full record; 8 carry an S&S flag and $2,612 appears in current assessed amounts.
3. **HEALTH — 18 samples:** Occupational health samples 18 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 18K employee hours and 43 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 1 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 1 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 — 0 since 2021:** Inspections 13 inspection events and 281 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 47.44 — Temporary, portable containers.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-47/subpart-E/section-47.44
- **30 CFR 57.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-K/section-57.12004
- **30 CFR 57.14207 — Parking procedures for unattended equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14207
- **30 CFR 57.3200 — Correction of hazardous conditions.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-B/section-57.3200
- **30 CFR 57.14200 — Warnings prior to starting or moving equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-M/section-57.14200
- **30 CFR 48.29 — Records of training.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-H/part-48/subpart-B/section-48.29
- **30 CFR 57.11012 — Protection for openings around travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-57/subpart-J/section-57.11012
- **30 CFR 56.14205 — Machinery, equipment, and tools.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14205
- **30 CFR 56.14109 — Unguarded conveyors with adjacent travelways.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14109

## Source coverage

- **Accident, Injuries, and Illnesses:** 2 rows; 2010-11-11 through 2011-09-15; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2013-01-16 through 2013-01-16; source ID `msha-addresses`
- **Assessed Violations:** 23 rows; 2010-09-10 through 2012-09-26; source ID `msha-assessed-violations`
- **Conferences:** 1 rows; 2012-04-17 through 2012-04-17; source ID `msha-conferences`
- **Contractor Employment and Production — Quarterly:** 313 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 60 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 2 rows; 2010-03-01 through 2013-01-15; source ID `msha-controller-operator-history`
- **Inspections:** 13 rows; 2010-04-12 through 2012-09-24; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 39 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 12 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:** 18 rows; 2011-06-08 through 2012-09-06; source ID `msha-personal-health-samples`
- **Violations:** 23 rows; 2010-09-10 through 2012-09-26; 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/black-17-3304643`
- JSON: `/api/v1/mines/black-17-3304643`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/3304643/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/3304643/relationships`
- MCP resource: `mine://3304643/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`