# Relationship history for MSHA mine 3003686

Current hierarchy: **William  King → R G King General Construction Inc → Williams Pit**

- 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

- **controller_controls_mine:** Ronald  King → Williams Pit; 1950-01-01 to 2024-03-13; source msha-controller-operator-history
- **operator_operates_mine:** R G King General Construction Inc → Williams Pit; 2009-06-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald  King → R G King General Construction Inc; 2009-06-02 to 2024-03-13; source msha-controller-operator-history
- **controller_controls_mine:** William  King → Williams Pit; 2024-03-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  King → R G King General Construction Inc; 2024-03-14 to current/open; source msha-controller-operator-history