# Relationship history for MSHA mine 4201148

Current hierarchy: **Richard D  Craythorne → Craythorne Inc. → Craythorne Inc. 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:** Hall & Gailey Inc → Craythorne Inc. Pit; 1950-01-01 to 1992-02-02; source msha-controller-operator-history
- **controller_controls_mine:** Wayne G  Hall → Craythorne Inc. Pit; 1950-01-01 to 1992-02-02; source msha-controller-operator-history
- **controller_controls_operator:** Wayne G  Hall → Hall & Gailey Inc; 1950-01-01 to 1992-02-02; source msha-controller-operator-history
- **operator_operates_mine:** Craythorne Inc. → Craythorne Inc. Pit; 1992-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Richard D  Craythorne → Craythorne Inc. Pit; 1992-02-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard D  Craythorne → Craythorne Inc.; 1992-02-03 to current/open; source msha-controller-operator-history