# Relationship history for MSHA mine 3608806

Current hierarchy: **Whalen  Wenrich Jr; Richard  Wenrich → Three W M U G Mine → Orchard Slope**

- 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:** Three W M U G Mine → Orchard Slope; 1999-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Whalen  Wenrich Jr et al → Orchard Slope; 1999-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Whalen  Wenrich Jr et al → Three W M U G Mine; 1999-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Wenrich et al → Three W M U G Mine; 1999-09-01 to current/open; source msha-controller-operator-history