# Relationship history for MSHA mine 0203356

Current hierarchy: **Mark A  Anderson → Ringo Canyon Granite, LLC → Ringo Canyon Granite 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:** Ringo Canyon Granite, LLC → Ringo Canyon Granite LLC; 2015-08-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Mark A  Anderson → Ringo Canyon Granite LLC; 2015-08-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Mark A  Anderson → Ringo Canyon Granite, LLC; 2015-08-10 to current/open; source msha-controller-operator-history