# Relationship history for MSHA mine 2402498

Current hierarchy: **Custer County-MT → Custer County Road Dept → CCRD Annihilater TSAB-643-07**

- 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:** Custer County Road Dept → CCRD Annihilater TSAB-643-07; 2008-01-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Custer County-MT → CCRD Annihilater TSAB-643-07; 2008-01-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Custer County-MT → Custer County Road Dept; 2008-01-02 to current/open; source msha-controller-operator-history