# Relationship history for MSHA mine 4105337

Current hierarchy: **Rasmussen Group Inc → Hallett Materials → Hardin Plant**

- 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:** Rasmussen Group Inc → Hardin Plant; 2001-08-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hallett Materials → Hardin Plant; 2018-04-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rasmussen Group Inc → Hallett Materials; 2018-04-19 to current/open; source msha-controller-operator-history