# Relationship history for MSHA mine 4603107

Current hierarchy: **La Rosa Corp → La Rosa Fuel Company Inc → Fairway Mine (Tipple)**

- 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:** Ann Lorentz Coal Company → Fairway Mine (Tipple); 1950-01-01 to 1984-07-02; source msha-controller-operator-history
- **controller_controls_mine:** Riggs Dale → Fairway Mine (Tipple); 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Riggs Dale → Ann Lorentz Coal Company; 1950-01-01 to 1984-07-02; source msha-controller-operator-history
- **controller_controls_mine:** La Rosa Corp → Fairway Mine (Tipple); 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** La Rosa Fuel Company Inc → Fairway Mine (Tipple); 1984-07-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** La Rosa Corp → La Rosa Fuel Company Inc; 1984-07-03 to current/open; source msha-controller-operator-history