# Relationship history for MSHA mine 4300406

Current hierarchy: **Donald C  Beattie → Donald C Beattie → Drown 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Donald C Beattie → Drown Pit; 1986-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Donald C  Beattie → Drown Pit; 1986-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald C  Beattie → Donald C Beattie; 1986-06-01 to current/open; source msha-controller-operator-history