# Relationship history for MSHA mine 2003687

Current hierarchy: **Robert  Clawson → C2 Aggregates, LLC → Wash Plant #1**

- 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:** C2 Aggregates, LLC → Wash Plant #1; 2025-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert  Clawson → Wash Plant #1; 2025-04-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Clawson → C2 Aggregates, LLC; 2025-04-09 to current/open; source msha-controller-operator-history