# Relationship history for MSHA mine 3605462

Current hierarchy: **Odone A  Rosini → Rosini Coal Company → Maysville Cleaning 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:** Odone A  Rosini → Maysville Cleaning Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Edward  Helfrich et al → Maysville Cleaning Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Kerris & Helfrick Inc → Maysville Cleaning Plant; 1975-02-21 to 1985-09-16; source msha-controller-operator-history
- **controller_controls_operator:** Edward  Helfrich et al → Kerris & Helfrick Inc; 1975-02-21 to 1985-09-16; source msha-controller-operator-history
- **operator_operates_mine:** Rosini Coal Company → Maysville Cleaning Plant; 1985-09-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Odone A  Rosini → Rosini Coal Company; 1985-09-17 to current/open; source msha-controller-operator-history