# Relationship history for MSHA mine 2302419

Current hierarchy: **Colas S A → Heartland Materials → Heartland Materials**

- 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:** Heartland Materials LLC → Heartland Materials; 2011-06-24 to 2017-10-12; source msha-controller-operator-history
- **controller_controls_mine:** Richard  Hurst et al → Heartland Materials; 2011-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Richard  Hurst et al → Heartland Materials LLC; 2011-06-24 to 2017-10-12; source msha-controller-operator-history
- **controller_controls_operator:** Danny  Dumey Jr et al → Heartland Materials LLC; 2011-06-24 to 2017-10-12; source msha-controller-operator-history
- **operator_operates_mine:** Heartland Materials → Heartland Materials; 2017-10-13 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Colas S A → Heartland Materials; 2017-10-13 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Colas S A → Heartland Materials; 2017-10-13 to current/open; source msha-controller-operator-history