# Relationship history for MSHA mine 3800711

Current hierarchy: **Fred A  Burke Jr → Burke Company, Inc. → The Burke Mine**

- 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:** The Burke Company → The Burke Mine; 2005-11-08 to 2006-10-18; source msha-controller-operator-history
- **controller_controls_mine:** Fred A  Burke Jr → The Burke Mine; 2005-11-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fred A  Burke Jr → The Burke Company; 2005-11-08 to 2006-10-18; source msha-controller-operator-history
- **operator_operates_mine:** Burke Company, Inc. → The Burke Mine; 2006-10-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fred A  Burke Jr → The Burke Mine; 2006-10-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fred A  Burke Jr → Burke Company, Inc.; 2006-10-19 to current/open; source msha-controller-operator-history