# Relationship history for MSHA mine 4103443

Current hierarchy: **Red-Tex Materials Inc → Red-Tex Materials Inc → Mulberry Pit & Plant**

- 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:** Red-Tex Materials Inc → Mulberry Pit & Plant; 1986-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Red-Tex Materials Inc → Mulberry Pit & Plant; 1986-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Red-Tex Materials Inc → Red-Tex Materials Inc; 1986-12-01 to current/open; source msha-controller-operator-history