# Relationship history for MSHA mine 3200819

Current hierarchy: **Stanley James  Bergstrom → Stan Bergstrom Const. → Gilbraith**

- 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:** Stan Bergstrom Const. → Gilbraith; 2004-09-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stanley James  Bergstrom → Gilbraith; 2004-09-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stanley James  Bergstrom → Stan Bergstrom Const.; 2004-09-14 to current/open; source msha-controller-operator-history