# Relationship history for MSHA mine 3601558

Current hierarchy: **Pangersis Edward P → Panton Enterprises Inc → Bartins**

- 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:** Panton Enterprises Inc → Bartins; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Pangersis Edward P → Bartins; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pangersis Edward P → Panton Enterprises Inc; 1950-01-01 to current/open; source msha-controller-operator-history