# Relationship history for MSHA mine 2402104

Current hierarchy: **Dolence Floyd → Valley Asphalt → VALLEY ASPHALT**

- 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:** Valley Asphalt → VALLEY ASPHALT; 1997-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dolence Floyd → VALLEY ASPHALT; 1997-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dolence Floyd → Valley Asphalt; 1997-05-01 to current/open; source msha-controller-operator-history