# Relationship history for MSHA mine 3003834

Current hierarchy: **Peckham Industries Inc → E Tetz & Sons Inc → S5000**

- 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

- **controller_controls_mine:** Edward  Tetz Jr → S5000; 1950-01-01 to 2023-05-31; source msha-controller-operator-history
- **operator_operates_mine:** E Tetz & Sons Inc → S5000; 2012-03-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Edward  Tetz Jr → E Tetz & Sons Inc; 2012-03-22 to 2023-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Peckham Industries Inc → S5000; 2023-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peckham Industries Inc → E Tetz & Sons Inc; 2023-06-01 to current/open; source msha-controller-operator-history