# Relationship history for MSHA mine 3503536

Current hierarchy: **Rick  Franklin → Rick Franklin Corporation → Wild Rose 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Rick Franklin Corporation → Wild Rose Quarry; 2001-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rick  Franklin → Wild Rose Quarry; 2001-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rick  Franklin → Rick Franklin Corporation; 2001-08-01 to current/open; source msha-controller-operator-history