# Relationship history for MSHA mine 4604327

Current hierarchy: **CRH PLC → Southern West Virginina Asphalt Inc → Bowden 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

- **operator_operates_mine:** Kermit Butcher → Bowden Quarry; 1950-01-01 to 2002-10-03; source msha-controller-operator-history
- **controller_controls_mine:** Kermit  Butcher → Bowden Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kermit  Butcher → Kermit Butcher; 1950-01-01 to 2002-10-03; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Bowden Quarry; 2000-04-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Southern West Virginina Asphalt Inc → Bowden Quarry; 2002-10-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Southern West Virginina Asphalt Inc; 2002-10-04 to current/open; source msha-controller-operator-history