# Relationship history for MSHA mine 4202283

Current hierarchy: **Cason Todd  Stratton → Hurricane Ready Mix → Rattlesnake 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

- **controller_controls_mine:** Clayton Darwin  Stratton → Rattlesnake Pit; 1989-02-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Darwin Stratton & Son Inc → Rattlesnake Pit; 2000-04-01 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_operator:** Clayton Darwin  Stratton → Darwin Stratton & Son Inc; 2000-04-01 to 2007-11-15; source msha-controller-operator-history
- **operator_operates_mine:** Hurricane Ready Mix → Rattlesnake Pit; 2007-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Todd C  Stratton → Rattlesnake Pit; 2007-11-16 to 2019-10-08; source msha-controller-operator-history
- **controller_controls_operator:** Todd C  Stratton → Hurricane Ready Mix; 2007-11-16 to 2019-10-08; source msha-controller-operator-history
- **controller_controls_mine:** Cason Todd  Stratton → Rattlesnake Pit; 2019-10-09 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cason Todd  Stratton → Hurricane Ready Mix; 2019-10-09 to current/open; source msha-controller-operator-history