# Relationship history for MSHA mine 1002223

Current hierarchy: **Ronald W  Guill → Gold Hill Reclamation and Mining → Boise Refining Facility**

- 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:** Torry  McAlvain et al → Boise Refining Facility; 2010-07-20 to 2010-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Ronald W  Guill → Boise Refining Facility; 2011-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Gold Hill Reclamation and Mining → Boise Refining Facility; 2011-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Torry  McAlvain et al → Gold Hill Reclamation and Mining; 2011-08-12 to 2010-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Ronald W  Guill → Gold Hill Reclamation and Mining; 2011-08-12 to current/open; source msha-controller-operator-history