# Relationship history for MSHA mine 2601597

Current hierarchy: **i-80 Gold Corp → Osgood Mining Company, LLC → Granite 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Homestake Mining Company Of California → Granite Creek Mine; 1980-01-01 to 2011-09-01; source msha-controller-operator-history
- **controller_controls_mine:** Homestake Mining Company  et al → Granite Creek Mine; 1980-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Homestake Mining Company  et al → Homestake Mining Company Of California; 1980-01-01 to 2011-09-01; source msha-controller-operator-history
- **controller_controls_operator:** Barrick Gold Inc  et al → Homestake Mining Company Of California; 1980-01-01 to 2011-09-01; source msha-controller-operator-history
- **operator_operates_mine:** Atna Resources, Inc. → Granite Creek Mine; 2011-09-02 to 2016-05-23; source msha-controller-operator-history
- **controller_controls_mine:** Atna Resources Ltd. → Granite Creek Mine; 2011-09-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Atna Resources Ltd. → Atna Resources, Inc.; 2011-09-02 to 2016-05-23; source msha-controller-operator-history
- **operator_operates_mine:** Osgood Mining Company, LLC → Granite Creek Mine; 2016-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Waterton Global Resource Management Cayman Corp → Granite Creek Mine; 2016-05-24 to 2021-04-19; source msha-controller-operator-history
- **controller_controls_operator:** Waterton Global Resource Management Cayman Corp → Osgood Mining Company, LLC; 2016-05-24 to 2021-04-19; source msha-controller-operator-history
- **controller_controls_mine:** i-80 Gold Corp → Granite Creek Mine; 2021-04-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** i-80 Gold Corp → Osgood Mining Company, LLC; 2021-04-20 to current/open; source msha-controller-operator-history