# Relationship history for MSHA mine 4404483

Current hierarchy: **Bolling John W → Lonesome Pine Energy Company Inc → No 1 Strip**

- 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:** Trent Phillip L → No 1 Strip; 1976-05-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Black Creek Coal Company → No 1 Strip; 1976-08-16 to 1979-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Trent Phillip L → Black Creek Coal Company; 1976-08-16 to 1979-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Lonesome Pine Energy Company Inc → No 1 Strip; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bolling John W Et Al → No 1 Strip; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bolling John W Et Al → Lonesome Pine Energy Company Inc; 1980-01-01 to current/open; source msha-controller-operator-history