# Geode Shop

- **MSHA mine ID:** 1300186
- **Status:** Abandoned
- **Type / commodity:** Surface / Construction Sand and Gravel
- **Location:** Lee, IA
- **Operator:** Cessford Construction Co
- **Controller:** CRH PLC
- **Public source rows linked:** 233
- **Source coverage:** 13 / 20
- **Generated:** 2026-10-13T11:26:59.401Z

## Current entity hierarchy

**CRH PLC (M06183) → Cessford Construction Co (0085824) → Geode Shop (1300186)**

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

## Controller and operator valid-time history

- **Medusa Corp → Raid Quarries Division:** 1950-01-01 through 1979-04-05; derived from co-tenure at mine 1300186; source `msha-controller-operator-history`.
- **Crane Company → Medusa Aggregates Company:** 1979-04-06 through 1980-10-06; derived from co-tenure at mine 1300186; source `msha-controller-operator-history`.
- **Heidi Cessford  Krabbe et al → Cessford Construction Company:** 1980-10-07 through 2007-08-23; derived from co-tenure at mine 1300186; source `msha-controller-operator-history`.
- **CRH PLC → Cessford Construction Company:** 2007-08-24 through 2008-01-08; derived from co-tenure at mine 1300186; source `msha-controller-operator-history`.
- **CRH PLC → Cessford Construction Co:** 2008-01-09 through current/open; derived from co-tenure at mine 1300186; source `msha-controller-operator-history`.

- History rows: 5
- Typed edges: 14
- 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 1 historical accident/injury rows; 0 coded fatalities and 4 lost days across the published record.
2. **COMPLIANCE — 0 since 2021:** Violations and penalties 23 violation rows across the full record; 1 carry an S&S flag and $2,291 appears in current assessed amounts.
3. **HEALTH — 2 samples:** Occupational health samples 2 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 584 employee hours and 2 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 — 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 — 0 since 2021:** Inspections 26 inspection events and 178 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 56.18002 — Examination of working places.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-Q/section-56.18002
- **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 56.14107 — Moving machine parts.** (3 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-M/section-56.14107
- **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 56.14100 — 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 56.4101 — Warning signs.** (2 retained recent rows) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-C/section-56.4101
- **30 CFR 56.16005 — Securing gas cylinders.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-O/section-56.16005
- **30 CFR 56.20003 — Housekeeping.** (1 retained recent row) — https://www.ecfr.gov/current/title-30/chapter-I/subchapter-K/part-56/subpart-S/section-56.20003

## Source coverage

- **Accident, Injuries, and Illnesses:** 1 rows; 2007-09-04 through 2007-09-04; source ID `msha-accidents`
- **Addresses of Record:** 1 rows; 2018-05-10 through 2018-05-10; source ID `msha-addresses`
- **Assessed Violations:** 23 rows; 2002-06-12 through 2017-12-05; source ID `msha-assessed-violations`
- **Civil Penalty Dockets and Decisions:** 2 rows; 2011-02-16 through 2011-02-16; source ID `msha-civil-penalty-dockets-decisions`
- **Conferences:** 1 rows; 2006-11-08 through 2006-11-08; source ID `msha-conferences`
- **Contested Violations:** 2 rows; 2009-03-17 through 2009-03-17; source ID `msha-contested-violations`
- **Controller and Operator History:** 5 rows; 1950-01-01 through 2008-01-09; source ID `msha-controller-operator-history`
- **Inspections:** 26 rows; 2000-07-19 through 2018-03-27; source ID `msha-inspections`
- **Mine Employment and Production — Quarterly:** 116 rows; unknown through unknown; source ID `msha-mine-production-quarterly`
- **Mine Employment and Production — Yearly:** 30 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:** 2 rows; 2009-05-05 through 2018-03-28; source ID `msha-personal-health-samples`
- **Violations:** 23 rows; 2002-06-12 through 2017-12-05; 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/geode-shop-1300186`
- JSON: `/api/v1/mines/geode-shop-1300186`
- Silica records, units, sample status and quarterly means: `/api/v1/mines/1300186/silica` (snapshot year by default; `?year=all` for history; `&format=csv` for all matching rows)
- Relationship JSON: `/api/v1/mines/1300186/relationships`
- MCP resource: `mine://1300186/assessment`
- Complete Title 30 corpus: `/data/title30-sections.json`