# Relationship history for MSHA mine 0504424

Current hierarchy: **Fred  Lowry → Lowry Contracting Inc → Plant #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:** Fred  Lowry → Plant #3; 1988-07-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lowry Contracting Inc → Plant #3; 1990-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fred  Lowry → Lowry Contracting Inc; 1990-04-01 to current/open; source msha-controller-operator-history