# Relationship history for MSHA mine 3608861

Current hierarchy: **Brian K  Reichard → Reichard Contracting Inc → Whitney 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:** Brian K  Reichard → Whitney Site; 1985-02-07 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Reichard Contracting Inc → Whitney Site; 2000-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian K  Reichard → Reichard Contracting Inc; 2000-06-01 to current/open; source msha-controller-operator-history