# Relationship history for MSHA mine 3800660

Current hierarchy: **County Of Darlington-Sc → County Of Darlington → RUSSELL MINE #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

- **operator_operates_mine:** County Of Darlington → RUSSELL MINE #2; 1993-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** County Of Darlington-Sc → RUSSELL MINE #2; 1993-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** County Of Darlington-Sc → County Of Darlington; 1993-01-01 to current/open; source msha-controller-operator-history