# Relationship history for MSHA mine 0301895

Current hierarchy: **CRH PLC → APAC-Central, Inc → North Harrison 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Ashland Inc → North Harrison Quarry; 1950-01-01 to 2006-08-27; source msha-controller-operator-history
- **operator_operates_mine:** Rains Contracting Inc → North Harrison Quarry; 2004-07-27 to 2010-11-07; source msha-controller-operator-history
- **controller_controls_mine:** Dennis W  Rains et al → North Harrison Quarry; 2004-07-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dennis W  Rains et al → Rains Contracting Inc; 2004-07-27 to 2010-11-07; source msha-controller-operator-history
- **controller_controls_operator:** Cindy G  Rains et al → Rains Contracting Inc; 2004-07-27 to 2010-11-07; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → North Harrison Quarry; 2006-08-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** APAC-Central, Inc → North Harrison Quarry; 2010-11-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc → APAC-Central, Inc; 2010-11-08 to 2006-08-27; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → APAC-Central, Inc; 2010-11-08 to current/open; source msha-controller-operator-history