# Relationship history for MSHA mine 0102140

Current hierarchy: **CRH PLC → APAC-Alabama,Inc. → Alexander City**

- 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:** Granite Products Inc → Alexander City; 1979-01-01 to 1986-12-21; source msha-controller-operator-history
- **controller_controls_mine:** Harold W  Coker → Alexander City; 1979-01-01 to 1986-12-21; source msha-controller-operator-history
- **controller_controls_operator:** Harold W  Coker → Granite Products Inc; 1979-01-01 to 1986-12-21; source msha-controller-operator-history
- **controller_controls_mine:** Koppers Company Inc → Alexander City; 1979-02-01 to 1988-11-13; source msha-controller-operator-history
- **operator_operates_mine:** Rock Granite Inc → Alexander City; 1986-12-22 to 1988-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Hennon  King Sr → Alexander City; 1986-12-22 to 1988-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Hennon  King Sr → Rock Granite Inc; 1986-12-22 to 1988-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Davidson Mineral Properties Inc → Alexander City; 1988-04-01 to 1988-11-13; source msha-controller-operator-history
- **controller_controls_operator:** Koppers Company Inc → Davidson Mineral Properties Inc; 1988-04-01 to 1988-11-13; source msha-controller-operator-history
- **operator_operates_mine:** Hanson Aggregates Southeast Inc → Alexander City; 1988-11-14 to 2003-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Hanson PLC → Alexander City; 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 → Alexander City; 1994-07-13 to 2002-05-28; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Alexander City; 2002-05-29 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** APAC-Alabama,Inc. → Alexander City; 2003-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → APAC-Alabama,Inc.; 2003-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** U S Aggregate Inc → APAC-Alabama,Inc.; 2003-07-11 to 2002-05-28; source msha-controller-operator-history
- **controller_controls_mine:** Heidelberg Materials AG → Alexander City; 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