# Relationship history for MSHA mine 3003611

Current hierarchy: **Clayton W  Tanner → C G Tanner & Son Inc → C G Tanner & Son Inc**

- 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:** C G Tanner & Son Inc → C G Tanner & Son Inc; 2007-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Clayton W  Tanner → C G Tanner & Son Inc; 2007-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Clayton W  Tanner → C G Tanner & Son Inc; 2007-10-10 to current/open; source msha-controller-operator-history