# Relationship history for MSHA mine 3102252

Current hierarchy: **Armada Materials LLC → Alleghany Stone LLC → Alleghany Stone**

- 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:** Alleghany Stone LLC → Alleghany Stone; 2009-10-15 to 2026-06-14; source msha-controller-operator-history
- **controller_controls_mine:** Chris  Barrett → Alleghany Stone; 2009-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Chris  Barrett → Alleghany Stone LLC; 2009-10-15 to 2026-06-14; source msha-controller-operator-history
- **operator_operates_mine:** Alleghany Stone LLC → Alleghany Stone; 2026-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Armada Materials LLC → Alleghany Stone; 2026-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Armada Materials LLC → Alleghany Stone LLC; 2026-06-15 to current/open; source msha-controller-operator-history