# Relationship history for MSHA mine 1701077

Current hierarchy: **David  Pepin → R. Pepin and Sons, Inc. → RDO Olson Screen 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:** David  Pepin → RDO Olson Screen Plant; 1995-12-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** R. Pepin and Sons, Inc. → RDO Olson Screen Plant; 2022-09-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  Pepin → R. Pepin and Sons, Inc.; 2022-09-30 to current/open; source msha-controller-operator-history