# Relationship history for MSHA mine 2300032

Current hierarchy: **Wayne  Reeder → Callaway Mining Company → Callaway Mine And Mill**

- 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:** Centropolis Crushers Company Inc → Callaway Mine And Mill; 1950-01-01 to 1978-08-13; source msha-controller-operator-history
- **controller_controls_mine:** Slyster Skip → Callaway Mine And Mill; 1950-01-01 to 1978-08-13; source msha-controller-operator-history
- **controller_controls_operator:** Slyster Skip → Centropolis Crushers Company Inc; 1950-01-01 to 1978-08-13; source msha-controller-operator-history
- **operator_operates_mine:** Callaway Mining Company → Callaway Mine And Mill; 1978-08-14 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Wayne  Reeder → Callaway Mine And Mill; 1978-08-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wayne  Reeder → Callaway Mining Company; 1978-08-14 to current/open; source msha-controller-operator-history