# Relationship history for MSHA mine 3003998

Current hierarchy: **Danna Jay  Ellsworth; Ruben Walter  Ellsworth → Mohican Quarries → Dimentional Stone Yard**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Danna Jay  Ellsworth et al → Dimentional Stone Yard; 2010-07-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Mohican Quarries → Dimentional Stone Yard; 2017-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Danna Jay  Ellsworth et al → Mohican Quarries; 2017-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ruben Walter  Ellsworth et al → Mohican Quarries; 2017-09-01 to current/open; source msha-controller-operator-history