# Relationship history for MSHA mine 4603845

Current hierarchy: **Cline Larry → A B C Coal Company Inc → Mine #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

- **operator_operates_mine:** W-P Coal Company → Mine #2; 1950-01-01 to 1979-11-04; source msha-controller-operator-history
- **controller_controls_mine:** Wheeling-Pittsburgh Corp → Mine #2; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wheeling-Pittsburgh Corp → W-P Coal Company; 1950-01-01 to 1979-11-04; source msha-controller-operator-history
- **controller_controls_mine:** Cline Larry → Mine #2; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** A B C Coal Company Inc → Mine #2; 1979-11-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cline Larry → A B C Coal Company Inc; 1979-11-05 to current/open; source msha-controller-operator-history