# Relationship history for MSHA mine 3610123

Current hierarchy: **Ryan P  Guiton → Ryan Guiton Flagstone → RPG Quarry**

- 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:** Ryan Guiton Flagstone → RPG Quarry; 2014-11-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ryan P  Guiton → RPG Quarry; 2014-11-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ryan P  Guiton → Ryan Guiton Flagstone; 2014-11-03 to current/open; source msha-controller-operator-history