# Relationship history for MSHA mine 0404444

Current hierarchy: **W S Holding Corp → Western States Minerals Corp → Zaca**

- 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

- **operator_operates_mine:** Centurion Gold Inc → Zaca; 1980-07-01 to 1989-07-22; source msha-controller-operator-history
- **controller_controls_mine:** Centurion Gold Ltd → Zaca; 1980-07-01 to 1989-07-22; source msha-controller-operator-history
- **controller_controls_operator:** Centurion Gold Ltd → Centurion Gold Inc; 1980-07-01 to 1989-07-22; source msha-controller-operator-history
- **operator_operates_mine:** Western States Minerals Corp → Zaca; 1989-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** W S Holding Corp → Zaca; 1989-07-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** W S Holding Corp → Western States Minerals Corp; 1989-07-23 to current/open; source msha-controller-operator-history