# Relationship history for MSHA mine 0504675

Current hierarchy: **Bill H  Tenore → T Bone Stone Inc → WINDY POINT**

- 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 Bone Stone Inc → WINDY POINT; 1999-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bill H  Tenore → WINDY POINT; 1999-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bill H  Tenore → T Bone Stone Inc; 1999-11-01 to current/open; source msha-controller-operator-history