# Relationship history for MSHA mine 4405317

Current hierarchy: **Hopkins Willard L → Lee Merie Coal Company → No 1**

- 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

- **operator_operates_mine:** E & M Coal Company Inc → No 1; 1979-10-01 to 1980-01-22; source msha-controller-operator-history
- **controller_controls_mine:** Justus John Henry → No 1; 1979-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Justus John Henry → E & M Coal Company Inc; 1979-10-01 to 1980-01-22; source msha-controller-operator-history
- **operator_operates_mine:** Lee Merie Coal Company → No 1; 1980-01-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hopkins Willard L → No 1; 1980-01-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hopkins Willard L → Lee Merie Coal Company; 1980-01-23 to current/open; source msha-controller-operator-history