# Relationship history for MSHA mine 0202157

Current hierarchy: **W S Holding Corp → Western States Minerals Corp → Dos Cabezas-Gold Prince 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:** Phelps Dodge Corp → Dos Cabezas-Gold Prince Mine; 1950-01-01 to 2007-03-18; source msha-controller-operator-history
- **operator_operates_mine:** Phelps Dodge Corp → Dos Cabezas-Gold Prince Mine; 1983-05-01 to 1988-04-26; source msha-controller-operator-history
- **controller_controls_operator:** Phelps Dodge Corp → Phelps Dodge Corp; 1983-05-01 to 1988-04-26; source msha-controller-operator-history
- **operator_operates_mine:** Queenstake Resources (Usa) Inc → Dos Cabezas-Gold Prince Mine; 1988-04-27 to 1993-06-06; source msha-controller-operator-history
- **controller_controls_mine:** Queenstake Resources Ltd → Dos Cabezas-Gold Prince Mine; 1988-04-27 to 2007-09-30; source msha-controller-operator-history
- **controller_controls_operator:** Queenstake Resources Ltd → Queenstake Resources (Usa) Inc; 1988-04-27 to 1993-06-06; source msha-controller-operator-history
- **controller_controls_mine:** W S Holding Corp → Dos Cabezas-Gold Prince Mine; 1989-07-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Western States Minerals Corp → Dos Cabezas-Gold Prince Mine; 1993-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** W S Holding Corp → Western States Minerals Corp; 1993-06-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Freeport-McMoRan Inc → Dos Cabezas-Gold Prince Mine; 2007-03-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Freeport-McMoRan Inc → Phelps Dodge Corp; 2007-03-19 to 1988-04-26; source msha-controller-operator-history
- **controller_controls_mine:** Veris Gold Corp. → Dos Cabezas-Gold Prince Mine; 2007-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Veris Gold Corp. → Queenstake Resources (Usa) Inc; 2007-10-01 to 1993-06-06; source msha-controller-operator-history