# Relationship history for MSHA mine 3100884

Current hierarchy: **State Of North Carolina → N C Dept Of Transportation-Div Of Highways → Edgecombe County Pits**

- 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:** N C Dept Of Transportation-Div Of Highways → Edgecombe County Pits; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** State Of North Carolina → Edgecombe County Pits; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** State Of North Carolina → N C Dept Of Transportation-Div Of Highways; 1950-01-01 to current/open; source msha-controller-operator-history