# Relationship history for MSHA mine 1514628

Current hierarchy: **Mc Elroy Keith & Jeff → M & C Mining 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Mc Elroy Keith & Jeff Et Al → No 2; 1982-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Wild Turkey Enterprises Inc → No 2; 1984-05-01 to 1984-07-15; source msha-controller-operator-history
- **controller_controls_mine:** Sanders Kedrick → No 2; 1984-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sanders Kedrick → Wild Turkey Enterprises Inc; 1984-05-01 to 1984-07-15; source msha-controller-operator-history
- **operator_operates_mine:** M & C Mining Company → No 2; 1984-07-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mc Elroy Keith & Jeff Et Al → M & C Mining Company; 1984-07-16 to current/open; source msha-controller-operator-history