# Relationship history for MSHA mine 3503805

Current hierarchy: **Reggie  Hoover → Hoover Excavating & Trucking, 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:** Reggie  Hoover → Plant #3; 2000-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hoover Excavating & Trucking, Inc. → Plant #3; 2013-12-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Reggie  Hoover → Hoover Excavating & Trucking, Inc.; 2013-12-30 to current/open; source msha-controller-operator-history