# Relationship history for MSHA mine 3003880

Current hierarchy: **William  King → R. G. King General Construction → Kellogg Hill**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Ronald  King → Kellogg Hill; 1950-01-01 to 2024-03-13; source msha-controller-operator-history
- **operator_operates_mine:** R. G. King General Construction → Kellogg Hill; 2013-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald  King → R. G. King General Construction; 2013-03-31 to 2024-03-13; source msha-controller-operator-history
- **controller_controls_mine:** William  King → Kellogg Hill; 2024-03-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  King → R. G. King General Construction; 2024-03-14 to current/open; source msha-controller-operator-history