# Relationship history for MSHA mine 4405159

Current hierarchy: **Looney Roy → Looney Brothers Coal Company Inc → #2**

- 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:** E H  Lester → #2; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lassie Coal Corp → #2; 1979-01-01 to 1985-09-30; source msha-controller-operator-history
- **controller_controls_operator:** E H  Lester → Lassie Coal Corp; 1979-01-01 to 1985-09-30; source msha-controller-operator-history
- **controller_controls_mine:** Looney Roy Et Al → #2; 1984-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Knox Creek Coal Corp → #2; 1985-10-01 to 1987-11-10; source msha-controller-operator-history
- **controller_controls_mine:** Cyprus Amax Minerals Company → #2; 1985-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cyprus Amax Minerals Company → Knox Creek Coal Corp; 1985-10-01 to 1987-11-10; source msha-controller-operator-history
- **operator_operates_mine:** Looney Brothers Coal Company Inc → #2; 1987-11-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Looney Roy Et Al → Looney Brothers Coal Company Inc; 1987-11-11 to current/open; source msha-controller-operator-history