# Relationship history for MSHA mine 1002244

Current hierarchy: **Samuel G  Badgett → Specialty Excavating → Specialty Screen**

- 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:** Specialty Excavating → Specialty Screen; 2013-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Samuel G  Badgett → Specialty Screen; 2013-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Samuel G  Badgett → Specialty Excavating; 2013-12-02 to current/open; source msha-controller-operator-history