# Relationship history for MSHA mine 0505178

Current hierarchy: **Joseph  Harrington → MW Sorter LLC → MW Sorter LLC (London Mine)**

- 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:** MW Sorter LLC → MW Sorter LLC (London Mine); 2023-08-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Joseph  Harrington → MW Sorter LLC (London Mine); 2023-08-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joseph  Harrington → MW Sorter LLC; 2023-08-14 to current/open; source msha-controller-operator-history