# Relationship history for MSHA mine 4202034

Current hierarchy: **Pegasus Gold Inc → Usmx Of Utah Inc → Goldstrike Mine**

- 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:** Tenneco Inc → Goldstrike Mine; 1979-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tenneco Minerals Company → Goldstrike Mine; 1988-08-01 to 1993-02-15; source msha-controller-operator-history
- **controller_controls_operator:** Tenneco Inc → Tenneco Minerals Company; 1988-08-01 to 1993-02-15; source msha-controller-operator-history
- **operator_operates_mine:** Usmx Of Utah Inc → Goldstrike Mine; 1993-02-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pegasus Gold Inc Et Al → Goldstrike Mine; 1993-02-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pegasus Gold Inc Et Al → Usmx Of Utah Inc; 1993-02-16 to current/open; source msha-controller-operator-history