# Relationship history for MSHA mine 3004132

Current hierarchy: **Warren W  Fane → Warren W. Fane, Inc → Portable Mine 3**

- 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:** Warren W  Fane → Portable Mine 3; 1980-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Warren W. Fane, Inc → Portable Mine 3; 2024-05-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Warren W  Fane → Warren W. Fane, Inc; 2024-05-27 to current/open; source msha-controller-operator-history