# Relationship history for MSHA mine 4202466

Current hierarchy: **John L  Byars → RED CLIFF MINING INC → RED CLIFF MINE**

- 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

- **controller_controls_mine:** John L  Byars → RED CLIFF MINE; 2002-04-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** H & B Mining Inc → RED CLIFF MINE; 2007-04-18 to 2008-10-07; source msha-controller-operator-history
- **controller_controls_mine:** Elmer  Heinrich → RED CLIFF MINE; 2007-04-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elmer  Heinrich → H & B Mining Inc; 2007-04-18 to 2008-10-07; source msha-controller-operator-history
- **operator_operates_mine:** Red Cliff Mining Inc → RED CLIFF MINE; 2008-10-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John L  Byars → Red Cliff Mining Inc; 2008-10-08 to current/open; source msha-controller-operator-history