# Relationship history for MSHA mine 2003691

Current hierarchy: **Robert  Clawson → C2 Excavating, LLC → Powerscreen #2**

- 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:** Robert  Clawson → Powerscreen #2; 2025-06-24 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C2 Excavating, LLC → Powerscreen #2; 2025-06-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert  Clawson → C2 Excavating, LLC; 2025-06-26 to current/open; source msha-controller-operator-history