# Relationship history for MSHA mine 3901443

Current hierarchy: **Michael  Hagen; Paul  Hagen → Hagen Grading Company → Foster Pit**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Hagen Grading Company → Foster Pit; 2000-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Hagen  et al → Foster Pit; 2000-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Hagen  et al → Hagen Grading Company; 2000-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Paul  Hagen  et al → Hagen Grading Company; 2000-06-01 to current/open; source msha-controller-operator-history