# Relationship history for MSHA mine 2301148

Current hierarchy: **CRH PLC → Holliday Sand & Gravel Company, Inc. → Harrisonville Quarry**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Ashland Inc → Harrisonville Quarry; 1950-01-01 to 2006-08-27; source msha-controller-operator-history
- **operator_operates_mine:** Limpus Quarries Inc → Harrisonville Quarry; 1950-01-01 to 1996-08-06; source msha-controller-operator-history
- **controller_controls_mine:** Harlan L  Limpus et al → Harrisonville Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harlan L  Limpus et al → Limpus Quarries Inc; 1950-01-01 to 1996-08-06; source msha-controller-operator-history
- **operator_operates_mine:** Limpus Quarries Inc → Harrisonville Quarry; 1996-08-07 to 2007-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Ashland Inc → Harrisonville Quarry; 1996-08-07 to 2006-08-27; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc → Limpus Quarries Inc; 1996-08-07 to 2006-08-27; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Harrisonville Quarry; 2006-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Limpus Quarries Inc; 2006-08-28 to 2007-12-31; source msha-controller-operator-history
- **operator_operates_mine:** APAC Kansas Inc → Harrisonville Quarry; 2008-01-01 to 2026-04-23; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc → APAC Kansas Inc; 2008-01-01 to 2006-08-27; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → APAC Kansas Inc; 2008-01-01 to 2026-04-23; source msha-controller-operator-history
- **controller_controls_mine:** Ash Grove Cement Company → Harrisonville Quarry; 2008-08-01 to 2018-06-20; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Harrisonville Quarry; 2018-06-21 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Holliday Sand & Gravel Company, Inc. → Harrisonville Quarry; 2026-04-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ash Grove Cement Company → Holliday Sand & Gravel Company, Inc.; 2026-04-24 to 2018-06-20; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Holliday Sand & Gravel Company, Inc.; 2026-04-24 to current/open; source msha-controller-operator-history