# Relationship history for MSHA mine 1900887

Current hierarchy: **Cutler Richard H → Richard H Cutler Owner → John D Pit**

- 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:** Richard H Cutler Owner → John D Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cutler Richard H → John D Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cutler Richard H → Richard H Cutler Owner; 1950-01-01 to current/open; source msha-controller-operator-history