# Relationship history for MSHA mine 4406624

Current hierarchy: **Lester Roscoe → Double L Coal Corp → Mine 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Lester Roscoe → Mine No 3; 1979-01-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Double L Coal Corp → Mine No 3; 1991-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lester Roscoe → Double L Coal Corp; 1991-01-01 to current/open; source msha-controller-operator-history