# Relationship history for MSHA mine 0301849

Current hierarchy: **Noel R  McGrew; Sonny  Stanly → Noel R Mcgrew → FISHER MT.**

- 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:** Noel R Mcgrew → FISHER MT.; 2000-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Sonny  Stanly et al → FISHER MT.; 2000-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sonny  Stanly et al → Noel R Mcgrew; 2000-12-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Noel R  McGrew et al → Noel R Mcgrew; 2000-12-01 to current/open; source msha-controller-operator-history