# Relationship history for MSHA mine 1002287

Current hierarchy: **Electra Battery Materials Corporation → Idaho Cobalt Company → Iron Creek 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Earl Nichols  Waite → Iron Creek Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Earl Waite & Sons → Iron Creek Mine; 2017-05-16 to 2021-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Earl Nichols  Waite → Earl Waite & Sons; 2017-05-16 to 2021-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Idaho Cobalt Company → Iron Creek Mine; 2022-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Electra Battery Materials Corporation → Iron Creek Mine; 2022-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Electra Battery Materials Corporation → Idaho Cobalt Company; 2022-01-01 to current/open; source msha-controller-operator-history