# Relationship history for MSHA mine 0102711

Current hierarchy: **Whitlock A W → Long Branch Coal Company Inc → Cooks 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:** Whitlock A W → Cooks Mine; 1986-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Long Branch Coal Company Inc → Cooks Mine; 1986-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Whitlock A W → Long Branch Coal Company Inc; 1986-12-01 to current/open; source msha-controller-operator-history