# Relationship history for MSHA mine 1401585

Current hierarchy: **Marvin  Bedigrew → Associated Material & Supply Company Inc → MT. HOPE 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

- **controller_controls_mine:** Nadine S  Stannard → MT. HOPE PLANT; 1993-02-25 to 2025-04-25; source msha-controller-operator-history
- **operator_operates_mine:** Associated Material & Supply Company Inc → MT. HOPE PLANT; 1995-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Nadine S  Stannard → Associated Material & Supply Company Inc; 1995-03-01 to 2025-04-25; source msha-controller-operator-history
- **controller_controls_mine:** Marvin  Bedigrew → MT. HOPE PLANT; 2025-04-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marvin  Bedigrew → Associated Material & Supply Company Inc; 2025-04-26 to current/open; source msha-controller-operator-history