# Relationship history for MSHA mine 0202340

Current hierarchy: **Republic Goldfields Inc → Republic Goldfields Corp → Congress 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:** Echo Bay Exploration Inc → Congress Mine; 1986-10-01 to 1989-07-27; source msha-controller-operator-history
- **controller_controls_mine:** Echo Bay Mines Ltd → Congress Mine; 1986-10-01 to 1989-07-27; source msha-controller-operator-history
- **controller_controls_operator:** Echo Bay Mines Ltd → Echo Bay Exploration Inc; 1986-10-01 to 1989-07-27; source msha-controller-operator-history
- **operator_operates_mine:** Republic Goldfields Corp → Congress Mine; 1989-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Republic Goldfields Inc → Congress Mine; 1989-07-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Republic Goldfields Inc → Republic Goldfields Corp; 1989-07-28 to current/open; source msha-controller-operator-history