# Relationship history for MSHA mine 2402467

Current hierarchy: **Broadway Gold Mining Ltd → Broadway Gold Corporation → Madison 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:** Coronado Resources USA → Madison Mine; 2006-10-30 to 2016-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Coronado Resources Ltd → Madison Mine; 2006-10-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Coronado Resources Ltd → Coronado Resources USA; 2006-10-30 to 2016-11-15; source msha-controller-operator-history
- **operator_operates_mine:** Groundhog Mining & Milling Co., LLC → Madison Mine; 2016-11-16 to 2017-04-09; source msha-controller-operator-history
- **controller_controls_mine:** Nathan  Hunt et al → Madison Mine; 2016-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nathan  Hunt et al → Groundhog Mining & Milling Co., LLC; 2016-11-16 to 2017-04-09; source msha-controller-operator-history
- **controller_controls_operator:** Delbert  Hunt et al → Groundhog Mining & Milling Co., LLC; 2016-11-16 to 2017-04-09; source msha-controller-operator-history
- **operator_operates_mine:** Broadway Gold Corporation → Madison Mine; 2017-04-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Broadway Gold Mining Ltd → Madison Mine; 2017-04-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Broadway Gold Mining Ltd → Broadway Gold Corporation; 2017-04-10 to current/open; source msha-controller-operator-history