# Relationship history for MSHA mine 2601790

Current hierarchy: **Electra Mining Consolidated Ltd → Aurora Partnership → THE AURORA PARTNERSHIP**

- 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:** Electra Northwest Ltd → THE AURORA PARTNERSHIP; 1982-02-01 to 1983-06-13; source msha-controller-operator-history
- **controller_controls_mine:** Stelling Douglas → THE AURORA PARTNERSHIP; 1982-02-01 to 1983-06-13; source msha-controller-operator-history
- **controller_controls_operator:** Stelling Douglas → Electra Northwest Ltd; 1982-02-01 to 1983-06-13; source msha-controller-operator-history
- **operator_operates_mine:** Centennial Minerals Inc → THE AURORA PARTNERSHIP; 1983-06-14 to 1985-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Centennial Minerals Ltd → THE AURORA PARTNERSHIP; 1983-06-14 to 1985-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Centennial Minerals Ltd → Centennial Minerals Inc; 1983-06-14 to 1985-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Pacific Northwest Resources U S Inc → THE AURORA PARTNERSHIP; 1985-04-01 to 1986-04-21; source msha-controller-operator-history
- **controller_controls_mine:** Stelling Douglas → THE AURORA PARTNERSHIP; 1985-04-01 to 1986-04-21; source msha-controller-operator-history
- **controller_controls_operator:** Stelling Douglas → Pacific Northwest Resources U S Inc; 1985-04-01 to 1986-04-21; source msha-controller-operator-history
- **operator_operates_mine:** Aurora Partnership → THE AURORA PARTNERSHIP; 1986-04-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Electra Mining Consolidated Ltd → THE AURORA PARTNERSHIP; 1986-04-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Electra Mining Consolidated Ltd → Aurora Partnership; 1986-04-22 to current/open; source msha-controller-operator-history