# Relationship history for MSHA mine 5001275

Current hierarchy: **Hecla Mining Company → Territorial Corp → Golden Eagle 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Territorial Corp → Golden Eagle Mine; 1979-01-01 to 1984-08-28; source msha-controller-operator-history
- **controller_controls_mine:** Ranchers Exploration & Development Corp → Golden Eagle Mine; 1979-01-01 to 1984-08-28; source msha-controller-operator-history
- **controller_controls_operator:** Ranchers Exploration & Development Corp → Territorial Corp; 1979-01-01 to 1984-08-28; source msha-controller-operator-history
- **operator_operates_mine:** Territorial Corp → Golden Eagle Mine; 1984-08-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hecla Mining Company → Golden Eagle Mine; 1984-08-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hecla Mining Company → Territorial Corp; 1984-08-29 to current/open; source msha-controller-operator-history