# Relationship history for MSHA mine 2302284

Current hierarchy: **Jeremiah L  Callaghan; Marty E  Callaghan → CR Gravel → CR Gravel**

- 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:** C R Gravel → CR Gravel; 2003-05-28 to 2010-12-19; source msha-controller-operator-history
- **controller_controls_mine:** Marty E  Callaghan et al → CR Gravel; 2003-05-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marty E  Callaghan et al → C R Gravel; 2003-05-28 to 2010-12-19; source msha-controller-operator-history
- **controller_controls_operator:** Jeremiah L  Callaghan  et al → C R Gravel; 2003-05-28 to 2010-12-19; source msha-controller-operator-history
- **operator_operates_mine:** CR Gravel → CR Gravel; 2010-12-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Jeremiah L  Callaghan  et al → CR Gravel; 2010-12-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeremiah L  Callaghan  et al → CR Gravel; 2010-12-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Marty E  Callaghan et al → CR Gravel; 2010-12-20 to current/open; source msha-controller-operator-history