# Relationship history for MSHA mine 3003678

Current hierarchy: **Robert W  Reuschenberg → RWR Crane Service, Inc. → RWR Crane Service, Inc.**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** RWR Crane Service, Inc. → RWR Crane Service, Inc.; 2009-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert W  Reuschenberg → RWR Crane Service, Inc.; 2009-05-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert W  Reuschenberg → RWR Crane Service, Inc.; 2009-05-12 to current/open; source msha-controller-operator-history