# Relationship history for MSHA mine 4406085

Current hierarchy: **U S Coal Corporation → J A D Coal Company Inc → #1 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

- **controller_controls_mine:** Carl E  McAfee et al → #1 Preparation Plant; 1982-03-12 to 2008-04-17; source msha-controller-operator-history
- **operator_operates_mine:** J A D Coal Company Inc → #1 Preparation Plant; 1984-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carl E  McAfee et al → J A D Coal Company Inc; 1984-04-01 to 2008-04-17; source msha-controller-operator-history
- **controller_controls_operator:** Aubra P  Dean et al → J A D Coal Company Inc; 1984-04-01 to 2008-04-17; source msha-controller-operator-history
- **controller_controls_mine:** U S Coal Corporation → #1 Preparation Plant; 2008-04-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** U S Coal Corporation → J A D Coal Company Inc; 2008-04-18 to current/open; source msha-controller-operator-history