# Relationship history for MSHA mine 3402260

Current hierarchy: **Kinnan  Briggs → Briggs transport llc → Brach 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:** Briggs transport llc → Brach 1; 2026-04-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kinnan  Briggs → Brach 1; 2026-04-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kinnan  Briggs → Briggs transport llc; 2026-04-02 to current/open; source msha-controller-operator-history