# Relationship history for MSHA mine 4503061

Current hierarchy: **Ty  Ross → Redrock Wholesales Inc → Fairgrounds Plant**

- 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:** Ty  Ross → Fairgrounds Plant; 1984-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Redrock Wholesales Inc → Fairgrounds Plant; 1985-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ty  Ross → Redrock Wholesales Inc; 1985-10-01 to current/open; source msha-controller-operator-history