# Relationship history for MSHA mine 1002105

Current hierarchy: **Rowdy  Alldridge → Rowdy Crushing Inc → Rowdy Crushing Crusher**

- 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:** Rowdy Crushing Inc → Rowdy Crushing Crusher; 2007-01-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rowdy  Alldridge → Rowdy Crushing Crusher; 2007-01-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rowdy  Alldridge → Rowdy Crushing Inc; 2007-01-25 to current/open; source msha-controller-operator-history