# Relationship history for MSHA mine 2602446

Current hierarchy: **Nye County-NV → Nye County Road Department → Forest Home Pit**

- 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:** Nye County-NV → Forest Home Pit; 1986-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Nye County Road Department → Forest Home Pit; 2001-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nye County-NV → Nye County Road Department; 2001-01-01 to current/open; source msha-controller-operator-history