# Relationship history for MSHA mine 3004144

Current hierarchy: **Warren W  Fane → WARREN W FANE INC → GEORGE THOMPSON PIT**

- 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 → GEORGE THOMPSON PIT; 1980-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Warren W Fane Inc → GEORGE THOMPSON PIT; 2024-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Warren W  Fane → Warren W Fane Inc; 2024-10-03 to current/open; source msha-controller-operator-history