# Relationship history for MSHA mine 1102894

Current hierarchy: **Kubinski Pat → Heritage Material Inc → Heritage Material Incorporated**

- 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:** Heritage Material Inc → Heritage Material Incorporated; 1990-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kubinski Pat → Heritage Material Incorporated; 1990-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kubinski Pat → Heritage Material Inc; 1990-05-01 to current/open; source msha-controller-operator-history