# Relationship history for MSHA mine 0501304

Current hierarchy: **Energy Fuels Incorporated → Energy Fuels Resources → Torbyn**

- 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:** Mineral Reserves Group Inc → Torbyn; 1950-01-01 to 1982-12-27; source msha-controller-operator-history
- **controller_controls_mine:** Energy Reserves Group Inc → Torbyn; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Energy Reserves Group Inc → Mineral Reserves Group Inc; 1950-01-01 to 1982-12-27; source msha-controller-operator-history
- **operator_operates_mine:** Bias Mining Company → Torbyn; 1982-12-28 to 2006-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Ince Carson Et Al → Torbyn; 1982-12-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ince Carson Et Al → Bias Mining Company; 1982-12-28 to 2006-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Energy Fuels Resources → Torbyn; 2006-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Energy Fuels Incorporated → Torbyn; 2006-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Energy Fuels Incorporated → Energy Fuels Resources; 2006-07-01 to current/open; source msha-controller-operator-history