# Relationship history for MSHA mine 3503673

Current hierarchy: **Dan  Kukla; Luvernia  Buddrius → LuDan LLC → Sullivan 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:** LuDan LLC → Sullivan Pit; 2007-11-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Luvernia  Buddrius et al → Sullivan Pit; 2007-11-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Luvernia  Buddrius et al → LuDan LLC; 2007-11-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan  Kukla et al → LuDan LLC; 2007-11-05 to current/open; source msha-controller-operator-history