# Relationship history for MSHA mine 1518677

Current hierarchy: **Ronda A  Lilly → RAL Recovery Systems, LLC → RAL Auger #16**

- 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:** Ronda A  Lilly → RAL Auger #16; 2003-06-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** RAL Recovery Systems, LLC → RAL Auger #16; 2003-09-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronda A  Lilly → RAL Recovery Systems, LLC; 2003-09-19 to current/open; source msha-controller-operator-history