# Plant #4-Rolla

- **MSHA mine ID:** 2301700
- **Status:** Active
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Cole, MO
- **Operator:** Capital Quarries Company Inc
- **Controller:** Michael K Farmer; Elliott (Bud) E Farmer
- **Public source rows linked:** 1,323
- **Source coverage:** 16 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**Michael K Farmer; Elliott (Bud) E Farmer (M02148) → Capital Quarries Company Inc (L14846) → Plant #4-Rolla (2301700)**

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

## Controller and operator valid-time history

- **Wendell  Curtman → Curtman Materials:** 1978-03-09 through 1997-11-30; derived from co-tenure at mine 2301700; source `msha-controller-operator-history`.
- **Eric S  Strope et al → Capital Quarries Company Inc:** 1997-12-01 through 2011-04-18; derived from co-tenure at mine 2301700; source `msha-controller-operator-history`.
- **Elliott (Bud) E Farmer  et al → Capital Quarries Company Inc:** 2011-04-19 through current/open; derived from co-tenure at mine 2301700; source `msha-controller-operator-history`.
- **Michael K Farmer  et al → Capital Quarries Company Inc:** 2011-04-19 through current/open; derived from co-tenure at mine 2301700; source `msha-controller-operator-history`.

- History rows: 4
- 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 — 0 since 2021:** Accidents and injuries 2 historical accident/injury rows; 0 coded fatalities and 37 lost days across the published record.
2. **COMPLIANCE — 9 since 2021:** Violations and penalties 30 violation rows across the full record; 3 carry an S&S flag and $3,583 appears in current assessed amounts.
3. **HEALTH — 21 samples:** Occupational health samples 19 personal; 2 area. 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 4K employee hours and 10 summed average employees across reported subunits in the latest published quarter.
5. **LEGAL — 5 linked rows:** Contests, conferences and decisions 2 contested-violation rows, 2 civil-penalty docket/decision rows, and 1 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 — 14 since 2021:** Inspections 61 inspection events and 605 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 56.14100 — 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 56.12008 — Insulation and fittings for power wires and cables.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12008
- **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 56.12028 — Testing grounding systems.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **30 CFR 56.6405 — Firing devices.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-E/section-56.6405
- **30 CFR 56.20011 — Barricades and warning signs.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20011
- **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 56.14132 — 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 56.14101 — 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 56.4201 — Inspection.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4201

## Source coverage

- **Accident, Injuries, and Illnesses:** 2 rows; 2002-07-16 through 2009-04-09; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2012-09-17 through 2012-09-17; source ID `msha-addresses`
- **Metal and Nonmetal Area Samples:** 2 rows; 2024-09-20 through 2024-09-20; source ID `msha-area-samples`
- **Assessed Violations:** 30 rows; 2007-03-06 through 2026-04-08; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 2 rows; 2011-08-26 through 2024-03-05; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2019-11-12 through 2019-11-12; source ID `msha-conferences`
- **Contested Violations:** 2 rows; 2010-10-13 through 2023-06-21; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 640 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 143 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 4 rows; 1978-03-09 through 1997-12-01; source ID `msha-controller-operator-history`
- **Inspections:** 61 rows; 2001-03-20 through 2026-04-08; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 308 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 77 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; 2003-09-16 through 2025-10-15; source ID `msha-personal-health-samples`
- **Violations:** 30 rows; 2007-03-06 through 2026-04-08; 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/plant-4-rolla-2301700`
- JSON: `/api/v1/mines/plant-4-rolla-2301700`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2301700/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2301700/relationships`
- MCP resource: `mine://2301700/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`