# Relationship history for MSHA mine 2902328

Current hierarchy: **Equalizer Inc → St. Cloud Mining Co. → Hooper Quarry**

- 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:** Goldfield Corp → Hooper Quarry; 1950-01-01 to 2002-12-03; source msha-controller-operator-history
- **controller_controls_mine:** Imagin Minerals Incorporated → Hooper Quarry; 2002-12-04 to 2024-12-12; source msha-controller-operator-history
- **operator_operates_mine:** St. Cloud Mining Co. → Hooper Quarry; 2006-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Imagin Minerals Incorporated → St. Cloud Mining Co.; 2006-06-01 to 2024-12-12; source msha-controller-operator-history
- **controller_controls_operator:** Goldfield Corp → St. Cloud Mining Co.; 2006-06-01 to 2002-12-03; source msha-controller-operator-history
- **controller_controls_mine:** Equalizer Inc → Hooper Quarry; 2024-12-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Equalizer Inc → St. Cloud Mining Co.; 2024-12-13 to current/open; source msha-controller-operator-history