# Relationship history for MSHA mine 4608911

Current hierarchy: **Tracy W  Hylton II → Min Inc → Patton No 10 Mine**

- 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:** Tracy W  Hylton II → Patton No 10 Mine; 1988-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Min Inc → Patton No 10 Mine; 2001-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tracy W  Hylton II → Min Inc; 2001-07-01 to current/open; source msha-controller-operator-history