# Relationship history for MSHA mine 3607689

Current hierarchy: **Theodore R  Genovese II → Theodore R Genovese Ii Coal Company → Theodore R Genovese Iii Coal Co**

- 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

- **operator_operates_mine:** Theodore R Genovese Ii Coal Company → Theodore R Genovese Iii Coal Co; 1985-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Theodore R  Genovese II → Theodore R Genovese Iii Coal Co; 1985-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Theodore R  Genovese II → Theodore R Genovese Ii Coal Company; 1985-05-01 to current/open; source msha-controller-operator-history