# Relationship history for MSHA mine 3800591

Current hierarchy: **Holcim Ltd → Hardaway Concrete Company Inc → Hardaway Sand 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:** Larry  Forsell  et al → Hardaway Sand Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Foster-Dixiana Sand Inc → Hardaway Sand Plant; 1983-09-01 to 1988-08-07; source msha-controller-operator-history
- **controller_controls_operator:** Larry  Forsell  et al → Foster-Dixiana Sand Inc; 1983-09-01 to 1988-08-07; source msha-controller-operator-history
- **operator_operates_mine:** Hardaway Concrete Company Inc → Hardaway Sand Plant; 1988-08-08 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tate Guy M Iii → Hardaway Sand Plant; 1988-08-08 to 2003-01-08; source msha-controller-operator-history
- **controller_controls_operator:** Tate Guy M Iii → Hardaway Concrete Company Inc; 1988-08-08 to 2003-01-08; source msha-controller-operator-history
- **controller_controls_mine:** Page  Morris  et al → Hardaway Sand Plant; 2003-01-09 to 2007-08-02; source msha-controller-operator-history
- **controller_controls_operator:** Page  Morris  et al → Hardaway Concrete Company Inc; 2003-01-09 to 2007-08-02; source msha-controller-operator-history
- **controller_controls_operator:** Channing S  Joy  et al → Hardaway Concrete Company Inc; 2003-01-09 to 2007-08-02; source msha-controller-operator-history
- **controller_controls_mine:** Aggregate Industries PLC → Hardaway Sand Plant; 2007-08-03 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_operator:** Aggregate Industries PLC → Hardaway Concrete Company Inc; 2007-08-03 to 2009-04-29; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Hardaway Sand Plant; 2009-04-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Hardaway Concrete Company Inc; 2009-04-30 to current/open; source msha-controller-operator-history