# Relationship history for MSHA mine 2002719

Current hierarchy: **Tony Charles  Cusack → Cusack Excavating → Riverside 2nd 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

- **operator_operates_mine:** Charles Cusack Excavating → Riverside 2nd Pit; 1984-07-01 to 2023-02-12; source msha-controller-operator-history
- **controller_controls_mine:** Charles  Cusack → Riverside 2nd Pit; 1984-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Cusack → Charles Cusack Excavating; 1984-07-01 to 2023-02-12; source msha-controller-operator-history
- **controller_controls_mine:** Charles  Cusack → Riverside 2nd Pit; 1985-09-03 to 2023-02-12; source msha-controller-operator-history
- **operator_operates_mine:** Cusack Excavating → Riverside 2nd Pit; 2023-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tony Charles  Cusack → Riverside 2nd Pit; 2023-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tony Charles  Cusack → Cusack Excavating; 2023-02-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles  Cusack → Cusack Excavating; 2023-02-13 to 2023-02-12; source msha-controller-operator-history