# Relationship history for MSHA mine 4104415

Current hierarchy: **Blake A  Kuhlman → American Aggregates, LLC. → American Aggregates Mobile Plt #2**

- 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

- **controller_controls_mine:** Blake A  Kuhlman → American Aggregates Mobile Plt #2; 2002-08-13 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** American Aggregates, LLC. → American Aggregates Mobile Plt #2; 2003-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Blake A  Kuhlman → American Aggregates, LLC.; 2003-04-30 to current/open; source msha-controller-operator-history