# Relationship history for MSHA mine 4002847

Current hierarchy: **Donald C  Seiber → Tri-Dean Mining Inc → No 5 Mine**

- 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:** Donald C  Seiber et al → No 5 Mine; 1978-08-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tri-Dean Mining Inc → No 5 Mine; 1984-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald C  Seiber et al → Tri-Dean Mining Inc; 1984-01-01 to current/open; source msha-controller-operator-history