# Relationship history for MSHA mine 2401877

Current hierarchy: **Lake County-MT → Lake County Commissioners → Lake County Commissioners-Crusher**

- 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:** Lake County Commissioners → Lake County Commissioners-Crusher; 1988-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Lake County-MT → Lake County Commissioners-Crusher; 1988-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lake County-MT → Lake County Commissioners; 1988-09-01 to current/open; source msha-controller-operator-history