# Relationship history for MSHA mine 4405572

Current hierarchy: **Roulett J B → Page Fork Coal Company Inc → No 3**

- 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:** Roulett J B → No 3; 1974-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Deel Lando → No 3; 1979-11-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Circle L Coal Company → No 3; 1981-01-01 to 1981-03-18; source msha-controller-operator-history
- **controller_controls_operator:** Deel Lando → Circle L Coal Company; 1981-01-01 to 1981-03-18; source msha-controller-operator-history
- **operator_operates_mine:** Page Fork Coal Company Inc → No 3; 1981-03-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Roulett J B → Page Fork Coal Company Inc; 1981-03-19 to current/open; source msha-controller-operator-history