# Relationship history for MSHA mine 1001727

Current hierarchy: **Astles Gale → Lava Flow Products Inc → Snake Mountain**

- 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:** Lava Flow Products Inc → Snake Mountain; 1986-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Astles Gale → Snake Mountain; 1986-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Astles Gale → Lava Flow Products Inc; 1986-04-01 to current/open; source msha-controller-operator-history