# Relationship history for MSHA mine 2003551

Current hierarchy: **David W  Ruotsala → Ruotsala Construction, LLC. → Rooni Lane Pit**

- 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:** Ruotsala Construction LLC → Rooni Lane Pit; 2017-08-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David W  Ruotsala → Rooni Lane Pit; 2017-08-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David W  Ruotsala → Ruotsala Construction LLC; 2017-08-10 to current/open; source msha-controller-operator-history