# Relationship history for MSHA mine 2103831

Current hierarchy: **Donald O  Stoskpof → Stoskopf Redi-Mix of Roseau Inc. → Stoskopf Wash 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:** Donald O  Stoskpof → Stoskopf Wash Plant; 2003-10-28 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Stoskopf Redi-Mix of Roseau Inc. → Stoskopf Wash Plant; 2014-06-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald O  Stoskpof → Stoskopf Redi-Mix of Roseau Inc.; 2014-06-17 to current/open; source msha-controller-operator-history