# Relationship history for MSHA mine 2602424

Current hierarchy: **Lynn  Morgan → Have Welder Will Travel → H W W T**

- 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

- **controller_controls_mine:** Lynn  Morgan → H W W T; 1992-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Have Welder Will Travel → H W W T; 2000-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lynn  Morgan → Have Welder Will Travel; 2000-06-01 to current/open; source msha-controller-operator-history