# Relationship history for MSHA mine 4104468

Current hierarchy: **CRH PLC → APAC Texas, Inc. → Naruna 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:** Claude  Lindsey et al → Naruna Quarry; 1997-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ashland Inc → Naruna Quarry; 1999-07-01 to 2006-08-27; source msha-controller-operator-history
- **operator_operates_mine:** Lindsey Materials → Naruna Quarry; 2004-05-02 to 2010-03-10; source msha-controller-operator-history
- **controller_controls_mine:** Claude  Lindsey et al → Naruna Quarry; 2004-05-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Claude  Lindsey et al → Lindsey Materials; 2004-05-02 to 2010-03-10; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Naruna Quarry; 2006-08-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lindsey Contractors, Inc. → Naruna Quarry; 2010-03-11 to 2011-11-06; source msha-controller-operator-history
- **controller_controls_operator:** Claude  Lindsey et al → Lindsey Contractors, Inc.; 2010-03-11 to 2011-11-06; source msha-controller-operator-history
- **operator_operates_mine:** APAC Texas, Inc. → Naruna Quarry; 2011-11-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc → APAC Texas, Inc.; 2011-11-07 to 2006-08-27; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → APAC Texas, Inc.; 2011-11-07 to current/open; source msha-controller-operator-history