# Relationship history for MSHA mine 1506804

Current hierarchy: **Gilliam Berto → Gill-Way Fuels Inc → Kim No 1**

- 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:** Woodward Earnest → Kim No 1; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Straight Ridge Coal Company → Kim No 1; 1973-09-10 to 1974-10-15; source msha-controller-operator-history
- **controller_controls_operator:** Woodward Earnest → Straight Ridge Coal Company; 1973-09-10 to 1974-10-15; source msha-controller-operator-history
- **operator_operates_mine:** Gill-Way Fuels Inc → Kim No 1; 1974-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Gilliam Berto → Kim No 1; 1974-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Gilliam Berto → Gill-Way Fuels Inc; 1974-10-16 to current/open; source msha-controller-operator-history