# Relationship history for MSHA mine 3605667

Current hierarchy: **Farley William J → Sun Coal Company → Taylorsville Silt Bank**

- 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:** Farley William J → Taylorsville Silt Bank; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Sun Coal Company → Taylorsville Silt Bank; 1975-07-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Farley William J → Sun Coal Company; 1975-07-09 to current/open; source msha-controller-operator-history