# Midland Mine

- **MSHA mine ID:** 1800820
- **Status:** Active
- **Type / commodity:** Surface / Coal (Bituminous)
- **Location:** Allegany, MD
- **Operator:** Simkol Corp.
- **Controller:** Spencer J Svonavec
- **Public source rows linked:** 120
- **Source coverage:** 12 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Spencer J Svonavec (0167925) → Simkol Corp. (0126634) → Midland Mine (1800820)**

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

## Controller and operator valid-time history

- **Spencer J Svonavec → Simkol Corp.:** 2023-12-04 through current/open; derived from co-tenure at mine 1800820; source `msha-controller-operator-history`.
- **Donald  Simpson → Simkol Corp.:** 2023-12-04 through 2022-03-28; derived from co-tenure at mine 1800820; source `msha-controller-operator-history`.

- History rows: 2
- Typed edges: 5
- 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 — 0 since 2021:** Accidents and injuries 0 historical accident/injury rows; 0 coded fatalities and 0 lost days across the published record.
2. **COMPLIANCE — 17 since 2021:** Violations and penalties 17 violation rows across the full record; 4 carry an S&S flag and $3,145 appears in current assessed amounts.
3. **HEALTH — 58 samples:** Occupational health samples 36 coal dust; 4 coal quartz; 18 noise. 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 — 53K tons:** Quarterly production and employment 9K employee hours and 13 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 2 linked rows:** Contests, conferences and decisions 0 contested-violation rows, 0 civil-penalty docket/decision rows, and 2 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 — 9 since 2021:** Inspections 9 inspection events and 198 published inspection hours across the historical record.

## EIA annual operating context

- **Reporting year:** 2024
- **Production:** 135,133 short tons
- **Labor hours:** 29,116
- **Average employees:** 10
- **Coal supply region:** Appalachia Northern
- **Union code:** Not published
- **Published rows under this MSHA ID:** 1

## Recent Title 30 crosswalk

Snapshot current through 2026-08-19.

- **30 CFR 77.404 — Machinery and equipment; operation and maintenance.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.404
- **30 CFR 77.410 — Mobile equipment; automatic warning devices.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-E/section-77.410
- **30 CFR 77.505 — Cable fittings; suitability.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-F/section-77.505
- **30 CFR 77.1600 — Loading and haulage; general.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1600
- **30 CFR 77.1004 — Ground control; inspection and maintenance; general.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-K/section-77.1004
- **30 CFR 77.1605 — Loading and haulage equipment; installations.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1605
- **30 CFR 77.1110 — Examination and maintenance of firefighting equipment.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-L/section-77.1110
- **30 CFR 77.1606 — Loading and haulage equipment; inspection and maintenance.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1606
- **30 CFR 77.1607 — Loading and haulage equipment; operation.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-O/part-77/subpart-Q/section-77.1607

## Source coverage

- **Addresses of Record:** 1 rows; 2024-01-17 through 2024-01-17; source ID `msha-addresses`
- **Assessed Violations:** 17 rows; 2024-01-17 through 2026-06-05; source ID `msha-assessed-violations`
- **Coal Dust Samples:** 36 rows; 2024-03-13 through 2026-06-12; source ID `msha-coal-dust-samples`
- **Conferences:** 2 rows; 2026-08-21 through 2026-08-21; source ID `msha-conferences`
- **Controller and Operator History:** 2 rows; 2023-12-04 through 2023-12-04; source ID `msha-controller-operator-history`
- **Inspections:** 9 rows; 2024-01-17 through 2026-06-05; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 10 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 3 rows; unknown through unknown; source ID `msha-mine-production-yearly`
- **Mines:** 1 rows; unknown through unknown; source ID `msha-mines`
- **Noise Samples:** 18 rows; 2024-03-13 through 2025-11-05; source ID `msha-noise-samples`
- **Quartz Samples — Coal:** 4 rows; 2024-06-25 through 2025-11-03; source ID `msha-quartz-samples`
- **Violations:** 17 rows; 2024-01-17 through 2026-06-05; 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/midland-mine-1800820`
- JSON: `/api/v1/mines/midland-mine-1800820`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1800820/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1800820/relationships`
- MCP resource: `mine://1800820/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`