# Relationship history for MSHA mine 0901024

Current hierarchy: **CRH PLC → APAC Mid-South Inc → Cartersville**

- 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:** Koppers Company Inc → Cartersville; 1950-01-01 to 1988-11-13; source msha-controller-operator-history
- **operator_operates_mine:** Stone Man Inc → Cartersville; 1988-05-01 to 1988-11-13; source msha-controller-operator-history
- **controller_controls_operator:** Koppers Company Inc → Stone Man Inc; 1988-05-01 to 1988-11-13; source msha-controller-operator-history
- **operator_operates_mine:** Hanson Aggregates Southeast Inc → Cartersville; 1988-11-14 to 2003-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → Cartersville; 1988-11-14 to 2007-08-22; source msha-controller-operator-history
- **controller_controls_operator:** Hanson PLC → Hanson Aggregates Southeast Inc; 1988-11-14 to 2003-07-10; source msha-controller-operator-history
- **controller_controls_mine:** U S Aggregate Inc → Cartersville; 1994-07-13 to 2002-05-28; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Cartersville; 2002-05-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** APAC Mid-South Inc → Cartersville; 2003-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → APAC Mid-South Inc; 2003-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** U S Aggregate Inc → APAC Mid-South Inc; 2003-07-11 to 2002-05-28; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → Cartersville; 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 2003-07-10; source msha-controller-operator-history