# Relationship history for MSHA mine 4503057

Current hierarchy: **Edgar  Holbrook → Bishop Red Rock Inc → Lorena Butte**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Ty  Ross → Lorena Butte; 1984-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Redrock Wholesales Inc → Lorena Butte; 1985-08-01 to 1989-03-27; source msha-controller-operator-history
- **controller_controls_operator:** Ty  Ross → Redrock Wholesales Inc; 1985-08-01 to 1989-03-27; source msha-controller-operator-history
- **operator_operates_mine:** Bishop Red Rock Inc → Lorena Butte; 1989-03-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Edgar  Holbrook → Lorena Butte; 1989-03-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edgar  Holbrook → Bishop Red Rock Inc; 1989-03-28 to current/open; source msha-controller-operator-history