# Relationship history for MSHA mine 0500352

Current hierarchy: **Bendetti Bros Coal Co → Bendetti Bros Coal Co → Nu-Gap (Ug)**

- 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:** Bendetti Bros Coal Co → Nu-Gap (Ug); 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bendetti Bros Coal Co → Nu-Gap (Ug); 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bendetti Bros Coal Co → Bendetti Bros Coal Co; 1950-01-01 to current/open; source msha-controller-operator-history