# Relationship history for MSHA mine 2602530

Current hierarchy: **Dwight J Crossland → Crossland Resources → Ten Mile Mine**

- 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:** Crossland Resources → Ten Mile Mine; 2003-12-03 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dwight J Crossland → Ten Mile Mine; 2003-12-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dwight J Crossland → Crossland Resources; 2003-12-03 to current/open; source msha-controller-operator-history