# Relationship history for MSHA mine 0401806

Current hierarchy: **Beverly  Epidendio; Anthony  Epidendio; Michael  Epidendio → DNA Ridge Rock → DNA Ridge Rock**

- 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:** Hidden Valley Sand & Gravel Inc → DNA Ridge Rock; 1950-01-01 to 1998-03-01; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth R  Hilger → DNA Ridge Rock; 1950-01-01 to 1998-03-01; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth R  Hilger → Hidden Valley Sand & Gravel Inc; 1950-01-01 to 1998-03-01; source msha-controller-operator-history
- **operator_operates_mine:** DNA Ridge Rock → DNA Ridge Rock; 1998-03-02 to 2022-12-20; source msha-controller-operator-history
- **controller_controls_mine:** Beverly (Jonie)  Epidendio → DNA Ridge Rock; 1998-03-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Beverly (Jonie)  Epidendio → DNA Ridge Rock; 1998-03-02 to 2022-12-20; source msha-controller-operator-history
- **operator_operates_mine:** DNA Ridge Rock → DNA Ridge Rock; 2022-12-21 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Beverly  Epidendio et al → DNA Ridge Rock; 2022-12-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Beverly  Epidendio et al → DNA Ridge Rock; 2022-12-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Epidendio et al → DNA Ridge Rock; 2022-12-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Anthony  Epidendio et al → DNA Ridge Rock; 2022-12-21 to current/open; source msha-controller-operator-history