# Relationship history for MSHA mine 2200857

Current hierarchy: **Stephanie  Rowell; Craig  Rowell → Ripley Sand LLC → Ripley Sand**

- 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

- **operator_operates_mine:** Ripley Sand LLC → Ripley Sand; 2024-11-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Stephanie  Rowell et al → Ripley Sand; 2024-11-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Stephanie  Rowell et al → Ripley Sand LLC; 2024-11-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Craig  Rowell et al → Ripley Sand LLC; 2024-11-12 to current/open; source msha-controller-operator-history