# Relationship history for MSHA mine 1515522

Current hierarchy: **Jessica R  Lester → Lester Coal Company Inc → No 5**

- 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:** Jessica R  Lester et al → No 5; 1982-02-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lester Coal Company Inc → No 5; 1986-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jessica R  Lester et al → Lester Coal Company Inc; 1986-02-01 to current/open; source msha-controller-operator-history