# Relationship history for MSHA mine 3003737

Current hierarchy: **Danna Jay  Ellsworth; Ruben Walter  Ellsworth → MOHICAN QUARRIES → METSO JAW 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

- **operator_operates_mine:** Mohican Quarries → METSO JAW CRUSHER; 2010-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ruben Walter  Ellsworth et al → METSO JAW CRUSHER; 2010-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ruben Walter  Ellsworth et al → Mohican Quarries; 2010-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Danna Jay  Ellsworth et al → Mohican Quarries; 2010-07-01 to current/open; source msha-controller-operator-history