# Relationship history for MSHA mine 2003700

Current hierarchy: **Dustin W  Swarthout → Swarthout Excavating, LLC → County Pit**

- 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

- **operator_operates_mine:** Swarthout Excavating, LLC → County Pit; 2026-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dustin W  Swarthout → County Pit; 2026-03-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dustin W  Swarthout → Swarthout Excavating, LLC; 2026-03-24 to current/open; source msha-controller-operator-history