# Relationship history for MSHA mine 2102914

Current hierarchy: **Jeff C Roverud; Curtis G Roverud → Pederson Brothers Of Harmony Inc → Rauk Quarry**

- 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:** Pederson Brothers Of Harmony Inc → Rauk Quarry; 1983-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeff C Roverud et al → Rauk Quarry; 1983-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeff C Roverud et al → Pederson Brothers Of Harmony Inc; 1983-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Curtis G Roverud et al → Pederson Brothers Of Harmony Inc; 1983-08-01 to current/open; source msha-controller-operator-history