# Relationship history for MSHA mine 3002265

Current hierarchy: **Ronald F  Bushneck → Cazenovia Ready Mix Inc → CAZENOVIA READY MIX**

- 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:** Cazenovia Ready Mix Company → CAZENOVIA READY MIX; 1950-01-01 to 1986-01-07; source msha-controller-operator-history
- **controller_controls_mine:** Frank W  Bushneck → CAZENOVIA READY MIX; 1950-01-01 to 1986-01-07; source msha-controller-operator-history
- **controller_controls_operator:** Frank W  Bushneck → Cazenovia Ready Mix Company; 1950-01-01 to 1986-01-07; source msha-controller-operator-history
- **operator_operates_mine:** Cazenovia Ready Mix Inc → CAZENOVIA READY MIX; 1986-01-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ronald F  Bushneck → CAZENOVIA READY MIX; 1986-01-08 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ronald F  Bushneck → Cazenovia Ready Mix Inc; 1986-01-08 to current/open; source msha-controller-operator-history