# Relationship history for MSHA mine 3102235

Current hierarchy: **Madonna  Buchanan → Gem Mountain → Gem 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:** Gem Mountain → Gem Mountain; 2008-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Madonna  Buchanan → Gem Mountain; 2008-07-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Madonna  Buchanan → Gem Mountain; 2008-07-08 to current/open; source msha-controller-operator-history