# Relationship history for MSHA mine 2104080

Current hierarchy: **Zach  Hintermeister; Spencer  Arnold → A to Z Aggregate LLC → Wes**

- 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:** A to Z Aggregate LLC → Wes; 2024-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Spencer  Arnold et al → Wes; 2024-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Spencer  Arnold et al → A to Z Aggregate LLC; 2024-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Zach  Hintermeister et al → A to Z Aggregate LLC; 2024-07-08 to current/open; source msha-controller-operator-history