# Relationship history for MSHA mine 1505234

Current hierarchy: **Wood Jarrett M Jr → W-2 Inc → No 1 Tipple**

- 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:** T C H Coal Co Inc → No 1 Tipple; 1950-01-01 to 1974-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Travis  Bush et al → No 1 Tipple; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Travis  Bush et al → T C H Coal Co Inc; 1950-01-01 to 1974-02-28; source msha-controller-operator-history
- **operator_operates_mine:** W-2 Inc → No 1 Tipple; 1974-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Wood Jarrett M Jr → No 1 Tipple; 1974-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wood Jarrett M Jr → W-2 Inc; 1974-03-01 to current/open; source msha-controller-operator-history