# Relationship history for MSHA mine 4401714

Current hierarchy: **Whited James & Chester--Jerry Musick → Walker Coal Company → No 2**

- 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:** Little Byrd Coal Company → No 2; 1950-01-01 to 1977-08-10; source msha-controller-operator-history
- **controller_controls_mine:** Fuller Rual → No 2; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fuller Rual → Little Byrd Coal Company; 1950-01-01 to 1977-08-10; source msha-controller-operator-history
- **controller_controls_mine:** Whited James & Chester--Jerry Musick → No 2; 1977-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Walker Coal Company → No 2; 1977-08-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Whited James & Chester--Jerry Musick → Walker Coal Company; 1977-08-11 to current/open; source msha-controller-operator-history