# Relationship history for MSHA mine 4604574

Current hierarchy: **Solite Corp → Princess Anne Coal Corp → Princess Anne #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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Princess Anne Coal Corp → Princess Anne #2; 1974-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Solite Corp → Princess Anne #2; 1974-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Solite Corp → Princess Anne Coal Corp; 1974-01-01 to current/open; source msha-controller-operator-history