# Relationship history for MSHA mine 2601746

Current hierarchy: **Precious Metals Inc → Imperial Klondike Joint Venture → Klondike Mill**

- 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

- **controller_controls_mine:** Patterson Jim → Klondike Mill; 1980-04-01 to 1983-05-08; source msha-controller-operator-history
- **operator_operates_mine:** Brazos Metals Inc → Klondike Mill; 1981-05-01 to 1983-05-08; source msha-controller-operator-history
- **controller_controls_operator:** Patterson Jim → Brazos Metals Inc; 1981-05-01 to 1983-05-08; source msha-controller-operator-history
- **operator_operates_mine:** Imperial Klondike Joint Venture → Klondike Mill; 1983-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Precious Metals Inc Et Al → Klondike Mill; 1983-05-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Precious Metals Inc Et Al → Imperial Klondike Joint Venture; 1983-05-09 to current/open; source msha-controller-operator-history