# Relationship history for MSHA mine 3800122

Current hierarchy: **Heidelberg Materials AG → Heidelberg Materials Southeast Agg., LLC → BREWER SAND**

- 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:** Brewer Sand Company Inc → BREWER SAND; 1950-01-01 to 1999-12-02; source msha-controller-operator-history
- **controller_controls_mine:** Jimmie  Brewer → BREWER SAND; 1950-01-01 to 1999-12-02; source msha-controller-operator-history
- **controller_controls_operator:** Jimmie  Brewer → Brewer Sand Company Inc; 1950-01-01 to 1999-12-02; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → BREWER SAND; 1988-11-14 to 2007-08-22; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → BREWER SAND; 1988-11-14 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Hanson Aggregates East Inc → BREWER SAND; 1999-12-03 to 2001-09-12; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Hanson Aggregates East Inc; 1999-12-03 to 2001-09-12; source msha-controller-operator-history
- **operator_operates_mine:** Hanson Aggregates Southeast, Inc. → BREWER SAND; 2001-09-13 to 2002-06-20; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Hanson Aggregates Southeast, Inc.; 2001-09-13 to 2002-06-20; source msha-controller-operator-history
- **operator_operates_mine:** Hanson Aggregates East Inc → BREWER SAND; 2002-06-21 to 2003-03-02; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Hanson Aggregates East Inc; 2002-06-21 to 2003-03-02; source msha-controller-operator-history
- **operator_operates_mine:** Heidelberg Materials Southeast Agg., LLC → BREWER SAND; 2003-03-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Heidelberg Materials Southeast Agg., LLC; 2003-03-03 to 2007-08-22; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → BREWER SAND; 2007-08-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Hanson Aggregates Southeast, Inc.; 2007-08-23 to 2002-06-20; source msha-controller-operator-history
- **controller_controls_operator:** Heidelberg Materials AG → Heidelberg Materials Southeast Agg., LLC; 2007-08-23 to current/open; source msha-controller-operator-history