# Relationship history for MSHA mine 3100400

Current hierarchy: **CRH PLC → Harrison Aggregates → Waynesville 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 → Waynesville Quarry; 1950-01-01 to 2006-08-27; source msha-controller-operator-history
- **operator_operates_mine:** Aggregate Products Inc → Waynesville Quarry; 1950-01-01 to 1984-10-21; source msha-controller-operator-history
- **controller_controls_mine:** William B  Wiggins → Waynesville Quarry; 1950-01-01 to 1984-10-21; source msha-controller-operator-history
- **controller_controls_operator:** William B  Wiggins → Aggregate Products Inc; 1950-01-01 to 1984-10-21; source msha-controller-operator-history
- **operator_operates_mine:** Harrison Construction Co Div/APAC-Tennessee Inc → Waynesville Quarry; 1984-10-22 to 2008-10-29; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc → Harrison Construction Co Div/APAC-Tennessee Inc; 1984-10-22 to 2006-08-27; source msha-controller-operator-history
- **controller_controls_mine:** Ashland Inc → Waynesville Quarry; 2003-04-01 to 2006-08-27; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Waynesville Quarry; 2006-08-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Harrison Construction Co Div/APAC-Tennessee Inc; 2006-08-28 to 2008-10-29; source msha-controller-operator-history
- **operator_operates_mine:** Harrison Aggregates → Waynesville Quarry; 2008-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc → Harrison Aggregates; 2008-10-30 to 2006-08-27; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Harrison Aggregates; 2008-10-30 to current/open; source msha-controller-operator-history