# Relationship history for MSHA mine 3607755

Current hierarchy: **Aloe Holding Inc → Robinson Coal Company → Putt/Raccoon**

- 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:** Robinson Coal Company → Putt/Raccoon; 1985-11-01 to 1994-02-24; source msha-controller-operator-history
- **controller_controls_mine:** Robert G  Fratini → Putt/Raccoon; 1985-11-01 to 1994-02-24; source msha-controller-operator-history
- **controller_controls_operator:** Robert G  Fratini → Robinson Coal Company; 1985-11-01 to 1994-02-24; source msha-controller-operator-history
- **operator_operates_mine:** Robinson Coal Company → Putt/Raccoon; 1994-02-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Aloe Holding Inc → Putt/Raccoon; 1994-02-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Aloe Holding Inc → Robinson Coal Company; 1994-02-25 to current/open; source msha-controller-operator-history