# Relationship history for MSHA mine 4801786

Current hierarchy: **Rodney  Butler → RGB Construction → Crusher #1**

- 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:** RGB Construction → Crusher #1; 2014-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rodney  Butler → Crusher #1; 2014-08-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rodney  Butler → RGB Construction; 2014-08-26 to current/open; source msha-controller-operator-history