# Relationship history for MSHA mine 4001582

Current hierarchy: **Meeks Franklin Dee → Marion Coal Company Inc → No 29**

- 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

- **operator_operates_mine:** Pine Coal Co → No 29; 1974-01-01 to 1974-08-12; source msha-controller-operator-history
- **controller_controls_mine:** Pine Coal Company → No 29; 1974-01-01 to 1974-08-12; source msha-controller-operator-history
- **controller_controls_operator:** Pine Coal Company → Pine Coal Co; 1974-01-01 to 1974-08-12; source msha-controller-operator-history
- **operator_operates_mine:** Marion Coal Company Inc → No 29; 1974-08-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Meeks Franklin Dee → No 29; 1974-08-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Meeks Franklin Dee → Marion Coal Company Inc; 1974-08-13 to current/open; source msha-controller-operator-history