# Relationship history for MSHA mine 4202688

Current hierarchy: **Allen  Lee → Budd Lee and Sons Inc. → Grave 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

- **controller_controls_mine:** Allen  Lee → Grave Pit; 2000-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Budd Lee and Sons Inc. → Grave Pit; 2018-06-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Allen  Lee → Budd Lee and Sons Inc.; 2018-06-06 to current/open; source msha-controller-operator-history