# Relationship history for MSHA mine 0401789

Current hierarchy: **Henry F  Hunte → H G Fenton Material Company → Mission Valley Plant**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** H G Fenton Material Company → Mission Valley Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Henry F  Hunte et al → Mission Valley Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Henry F  Hunte et al → H G Fenton Material Company; 1950-01-01 to current/open; source msha-controller-operator-history