# Relationship history for MSHA mine 4606117

Current hierarchy: **Jeffrey A  Goldizen → Bradford Stone Inc → Bradford Stone**

- 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:** Bradford Stone Inc → Bradford Stone; 1980-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Roy E  Bradford → Bradford Stone; 1980-02-01 to 2006-06-04; source msha-controller-operator-history
- **controller_controls_operator:** Roy E  Bradford → Bradford Stone Inc; 1980-02-01 to 2006-06-04; source msha-controller-operator-history
- **controller_controls_mine:** Jeffrey A  Goldizen → Bradford Stone; 2006-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffrey A  Goldizen → Bradford Stone Inc; 2006-06-05 to current/open; source msha-controller-operator-history