# Relationship history for MSHA mine 1515822

Current hierarchy: **Donald E  Bowles → Charolais Corp → Whiskey Hill**

- 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:** Donald E  Bowles → Whiskey Hill; 1977-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** E R Trucking Company Inc → Whiskey Hill; 1986-10-01 to 1988-06-20; source msha-controller-operator-history
- **controller_controls_mine:** Beddow James A & Edna Ruth Et Al → Whiskey Hill; 1986-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Beddow James A & Edna Ruth Et Al → E R Trucking Company Inc; 1986-10-01 to 1988-06-20; source msha-controller-operator-history
- **operator_operates_mine:** Charolais Corp → Whiskey Hill; 1988-06-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald E  Bowles → Charolais Corp; 1988-06-21 to current/open; source msha-controller-operator-history