# Relationship history for MSHA mine 5100288

Current hierarchy: **Hugh H  Willocks → Willocks Construction Corp → Plant 2**

- 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:** Hugh H  Willocks → Plant 2; 2005-10-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Willocks Construction Corp → Plant 2; 2008-01-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hugh H  Willocks → Willocks Construction Corp; 2008-01-10 to current/open; source msha-controller-operator-history