# Relationship history for MSHA mine 3200929

Current hierarchy: **Rick R  Gokey → Eagle Rock Timber, Inc → 750**

- 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:** Eagle Rock Timber, Inc → 750; 2011-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rick R  Gokey → 750; 2011-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rick R  Gokey → Eagle Rock Timber, Inc; 2011-12-01 to current/open; source msha-controller-operator-history