# Relationship history for MSHA mine 2401962

Current hierarchy: **James  Carney; Orville  Fossum → Malta Ready Mix → PORTABLE CRUSHER**

- 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

- **controller_controls_mine:** Orville  Fossum et al → PORTABLE CRUSHER; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Malta Ready Mix → PORTABLE CRUSHER; 1992-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Orville  Fossum et al → Malta Ready Mix; 1992-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Carney et al → Malta Ready Mix; 1992-04-01 to current/open; source msha-controller-operator-history