# Relationship history for MSHA mine 5001645

Current hierarchy: **Dale  Whitney → Arctic Whitney Inc → Arctic Whitney Offshore**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** Arctic Whitney Inc → Arctic Whitney Offshore; 1999-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dale  Whitney  et al → Arctic Whitney Offshore; 1999-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dale  Whitney  et al → Arctic Whitney Inc; 1999-05-01 to current/open; source msha-controller-operator-history