# Relationship history for MSHA mine 1518339

Current hierarchy: **Wilk  Renfro → Core Management Inc → Root Branch #1**

- 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:** Core Management Inc → Root Branch #1; 2001-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Wilk  Renfro → Root Branch #1; 2001-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wilk  Renfro → Core Management Inc; 2001-02-01 to current/open; source msha-controller-operator-history