# Relationship history for MSHA mine 3608247

Current hierarchy: **Fourway Participation Company B V → Ridgewood Mining Inc → Bailey Site**

- 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

- **controller_controls_mine:** Fourway Participation Company B V → Bailey Site; 1989-05-19 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Ridgewood Mining Inc → Bailey Site; 1991-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fourway Participation Company B V → Ridgewood Mining Inc; 1991-04-01 to current/open; source msha-controller-operator-history