# Relationship history for MSHA mine 0500916

Current hierarchy: **Energy Fuels Incorporated → Energy Fuels Resources → New Verde**

- 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:** Rajah Ventures Ltd → New Verde; 1950-01-01 to 2008-06-26; source msha-controller-operator-history
- **controller_controls_mine:** Swerdfeger R M Et Al → New Verde; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Swerdfeger R M Et Al → Rajah Ventures Ltd; 1950-01-01 to 2008-06-26; source msha-controller-operator-history
- **controller_controls_mine:** Energy Fuels Incorporated → New Verde; 2006-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Energy Fuels Resources → New Verde; 2008-06-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Energy Fuels Incorporated → Energy Fuels Resources; 2008-06-27 to current/open; source msha-controller-operator-history