# Relationship history for MSHA mine 0404404

Current hierarchy: **United States Government → U S Bureau Of Reclamation → U S Bureau Of Reclamation Pits**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** Richard Murray Company Inc → U S Bureau Of Reclamation Pits; 1980-04-01 to 1980-08-17; source msha-controller-operator-history
- **controller_controls_mine:** Murray Richard → U S Bureau Of Reclamation Pits; 1980-04-01 to 1980-08-17; source msha-controller-operator-history
- **controller_controls_operator:** Murray Richard → Richard Murray Company Inc; 1980-04-01 to 1980-08-17; source msha-controller-operator-history
- **operator_operates_mine:** U S Bureau Of Reclamation → U S Bureau Of Reclamation Pits; 1980-08-18 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** United States Government → U S Bureau Of Reclamation Pits; 1980-08-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** United States Government → U S Bureau Of Reclamation; 1980-08-18 to current/open; source msha-controller-operator-history