# Relationship history for MSHA mine 1516637

Current hierarchy: **Aubra P  Dean; Carl E  McAfee → Triple C Coal Inc → #1**

- 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:** Triple C Coal Inc → #1; 1989-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Carl E  McAfee et al → #1; 1989-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Carl E  McAfee et al → Triple C Coal Inc; 1989-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aubra P  Dean et al → Triple C Coal Inc; 1989-05-01 to current/open; source msha-controller-operator-history