# Relationship history for MSHA mine 2003501

Current hierarchy: **Levi D  Halliwill Jr → Levi's Excavating → McGregor South**

- 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:** Levi's Excavating → McGregor South; 2014-09-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Levi D  Halliwill Jr → McGregor South; 2014-09-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Levi D  Halliwill Jr → Levi's Excavating; 2014-09-23 to current/open; source msha-controller-operator-history