# Conco Quarries- Fair Play

- **MSHA mine ID:** 2302117
- **Status:** Intermittent
- **Type / commodity:** Surface / Crushed, Broken Limestone NEC
- **Location:** Polk, MO
- **Operator:** Conco Quarries
- **Controller:** CRH PLC
- **Public source rows linked:** 486
- **Source coverage:** 15 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**CRH PLC (M06183) → Conco Quarries (L11502) → Conco Quarries- Fair Play (2302117)**

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

## Controller and operator valid-time history

- **Tom  Ottendorf → Ottendorf Stone Inc:** 1995-05-01 through 1996-04-28; derived from co-tenure at mine 2302117; source `msha-controller-operator-history`.
- **Leroy  Tarr et al → T & M Stone Quarry Llc:** 1996-04-29 through 2010-01-07; derived from co-tenure at mine 2302117; source `msha-controller-operator-history`.
- **Wanda  Tarr et al → T & M Stone Quarry Llc:** 1996-04-29 through 2010-01-07; derived from co-tenure at mine 2302117; source `msha-controller-operator-history`.
- **Ash Grove Cement Company → Ash Grove Aggregates Inc:** 2010-01-08 through 2018-06-20; derived from co-tenure at mine 2302117; source `msha-controller-operator-history`.
- **CRH PLC → Ash Grove Aggregates Inc:** 2018-06-21 through 2020-06-23; derived from co-tenure at mine 2302117; source `msha-controller-operator-history`.
- **Ash Grove Cement Company → Conco Quarries:** 2020-06-24 through 2018-06-20; derived from co-tenure at mine 2302117; source `msha-controller-operator-history`.
- **CRH PLC → Conco Quarries:** 2020-06-24 through 2026-01-19; derived from co-tenure at mine 2302117; source `msha-controller-operator-history`.
- **Ashland Inc → Conco Quarries:** 2026-01-20 through 2006-08-27; derived from co-tenure at mine 2302117; source `msha-controller-operator-history`.
- **CRH PLC → Conco Quarries:** 2026-01-20 through current/open; derived from co-tenure at mine 2302117; source `msha-controller-operator-history`.

- History rows: 9
- Typed edges: 20
- Interval anomalies: 2
- 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 — 2 since 2021:** Accidents and injuries 4 historical accident/injury rows; 0 coded fatalities and 13 lost days across the published record.
2. **COMPLIANCE — 30 since 2021:** Violations and penalties 64 violation rows across the full record; 9 carry an S&S flag and $7,688 appears in current assessed amounts.
3. **HEALTH — 26 samples:** Occupational health samples 26 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 5K employee hours and 9 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 — 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 — 17 since 2021:** Inspections 43 inspection events and 631 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 56.13015 — 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 41.12 — Changes; notification by operator.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-G/part-41/subpart-B/section-41.12
- **30 CFR 56.12004 — Electrical conductors.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12004
- **30 CFR 56.15001 — First-aid materials.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-N/section-56.15001
- **30 CFR 50.20-1 — General instructions for completing MSHA Form 7000-1.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-I/part-50/subpart-C/section-50.20-1
- **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
- **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 56.4200 — General requirements.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4200
- **30 CFR 56.12028 — Testing grounding systems.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-K/section-56.12028
- **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

## Source coverage

- **Accident, Injuries, and Illnesses:** 4 rows; 2000-03-09 through 2024-09-24; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2026-06-26 through 2026-06-26; source ID `msha-addresses`
- **Assessed Violations:** 64 rows; 2001-06-12 through 2026-06-11; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 2 rows; 2010-08-16 through 2010-08-16; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2002-04-18 through 2002-04-18; source ID `msha-conferences`
- **Contested Violations:** 2 rows; 2009-08-05 through 2009-08-05; source ID `msha-contested-violations`
- **Contractor Employment and Production — Quarterly:** 62 rows; unknown through unknown; source ID `msha-contractor-production-quarterly`
- **Contractor Employment and Production — Yearly:** 12 rows; unknown through unknown; source ID `msha-contractor-production-yearly`
- **Controller and Operator History:** 9 rows; 1995-05-01 through 2026-01-20; source ID `msha-controller-operator-history`
- **Inspections:** 43 rows; 2000-04-18 through 2026-06-11; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 153 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 42 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:** 26 rows; 2001-06-12 through 2022-05-26; source ID `msha-personal-health-samples`
- **Violations:** 64 rows; 2001-06-12 through 2026-06-11; 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/conco-quarries-fair-play-2302117`
- JSON: `/api/v1/mines/conco-quarries-fair-play-2302117`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/2302117/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/2302117/relationships`
- MCP resource: `mine://2302117/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`