# Relationship history for MSHA mine 4606216

Current hierarchy: **Day Jerry → Rider Coal Corp → No 24**

- 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:** Adkins Tommy Et Al → No 24; 1974-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Adkins Coal Company → No 24; 1980-08-01 to 1984-05-20; source msha-controller-operator-history
- **controller_controls_operator:** Adkins Tommy Et Al → Adkins Coal Company; 1980-08-01 to 1984-05-20; source msha-controller-operator-history
- **operator_operates_mine:** Rider Coal Corp → No 24; 1984-05-21 to 1985-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Pennington John Et Al → No 24; 1984-05-21 to 1985-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Pennington John Et Al → Rider Coal Corp; 1984-05-21 to 1985-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Rider Coal Corp → No 24; 1985-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Day Jerry → No 24; 1985-03-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Day Jerry → Rider Coal Corp; 1985-03-15 to current/open; source msha-controller-operator-history