# Relationship history for MSHA mine 4503720

Current hierarchy: **The Estate of William Radobenko Sr; Julie  Radobenko → ACI Northwest Inc → BEAL**

- 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:** William  Radobenko Jr et al → BEAL; 2006-06-26 to 2015-12-31; source msha-controller-operator-history
- **operator_operates_mine:** ACI Northwest Inc → BEAL; 2013-12-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William  Radobenko Jr et al → ACI Northwest Inc; 2013-12-02 to 2015-12-31; source msha-controller-operator-history
- **controller_controls_operator:** William  Radobenko Sr  et al → ACI Northwest Inc; 2013-12-02 to 2015-12-31; source msha-controller-operator-history
- **controller_controls_mine:** The Estate of William Radobenko Sr et al → BEAL; 2016-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** The Estate of William Radobenko Sr et al → ACI Northwest Inc; 2016-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Julie  Radobenko et al → ACI Northwest Inc; 2016-01-01 to current/open; source msha-controller-operator-history