# Relationship history for MSHA mine 2104075

Current hierarchy: **Braxton  Sathers → Split Rock Processing → 205 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

- **operator_operates_mine:** Split Rock Processing → 205 Plant; 2024-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Braxton  Sathers → 205 Plant; 2024-06-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Braxton  Sathers → Split Rock Processing; 2024-06-05 to current/open; source msha-controller-operator-history