# Relationship history for MSHA mine 4003297

Current hierarchy: **Patrick  Garrison → Rocky Ridge Custom Crushing LLC → Rocky Ridge Custom Crushing LLC**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Rocky Ridge Stone Co. LLC → Rocky Ridge Custom Crushing LLC; 2007-05-31 to 2016-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Patrick  Garrison → Rocky Ridge Custom Crushing LLC; 2007-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patrick  Garrison → Rocky Ridge Stone Co. LLC; 2007-05-31 to 2016-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Rocky Ridge Custom Crushing LLC → Rocky Ridge Custom Crushing LLC; 2016-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Patrick  Garrison → Rocky Ridge Custom Crushing LLC; 2016-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Patrick  Garrison → Rocky Ridge Custom Crushing LLC; 2016-07-01 to current/open; source msha-controller-operator-history