# Relationship history for MSHA mine 2003379

Current hierarchy: **Kathleen  Leoni → Holly Disposal Inc → Holly 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:** Holly Disposal Inc → Holly Pit; 2007-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kathleen  Leoni → Holly Pit; 2007-02-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kathleen  Leoni → Holly Disposal Inc; 2007-02-05 to current/open; source msha-controller-operator-history