# Relationship history for MSHA mine 4606180

Current hierarchy: **Joe (John J)  Childress; Catherine  Childress → Joe Childress Inc → Red Ash Preparation Plant**

- 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:** Joe Childress Inc → Red Ash Preparation Plant; 1980-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joe (John J)  Childress et al → Red Ash Preparation Plant; 1980-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe (John J)  Childress et al → Joe Childress Inc; 1980-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Catherine  Childress et al → Joe Childress Inc; 1980-05-01 to current/open; source msha-controller-operator-history