# Relationship history for MSHA mine 1202141

Current hierarchy: **The Heritage Group → US Aggregates LLC → Crawfordsville 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** The Heritage Group → Crawfordsville Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** The Heritage Group → Crawfordsville Plant; 1989-06-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** US Aggregates, Inc. → Crawfordsville Plant; 1993-03-01 to 2026-06-17; source msha-controller-operator-history
- **controller_controls_operator:** The Heritage Group → US Aggregates, Inc.; 1993-03-01 to 2026-06-17; source msha-controller-operator-history
- **operator_operates_mine:** US Aggregates LLC → Crawfordsville Plant; 2026-06-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** The Heritage Group → US Aggregates LLC; 2026-06-18 to current/open; source msha-controller-operator-history