# Relationship history for MSHA mine 4605225

Current hierarchy: **Toler V D → Lynn Coal Company → No 32 Mine**

- 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

- **controller_controls_mine:** Toler V D → No 32 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lynn Coal Company → No 32 Mine; 1976-07-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Toler V D → Lynn Coal Company; 1976-07-19 to current/open; source msha-controller-operator-history