# Relationship history for MSHA mine 2103512

Current hierarchy: **Sheila  Rogne; Keith  Rogne → Buckley Construction II → Wash Plant**

- 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:** Keith  Rogne  et al → Wash Plant; 1994-11-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Buckley Construction II → Wash Plant; 2005-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith  Rogne  et al → Buckley Construction II; 2005-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sheila  Rogne  et al → Buckley Construction II; 2005-09-01 to current/open; source msha-controller-operator-history