# Relationship history for MSHA mine 0900038

Current hierarchy: **Vulcan Materials Company → Vulcan Construction Materials, LLC → Postell Quarry**

- 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:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Postell Quarry; 1950-01-01 to 2007-11-15; source msha-controller-operator-history
- **operator_operates_mine:** Hitchcock Corp → Postell Quarry; 1950-01-01 to 1979-05-20; source msha-controller-operator-history
- **controller_controls_mine:** Francis  Bourne → Postell Quarry; 1950-01-01 to 1979-08-01; source msha-controller-operator-history
- **controller_controls_operator:** Francis  Bourne → Hitchcock Corp; 1950-01-01 to 1979-05-20; source msha-controller-operator-history
- **controller_controls_mine:** Claussen Paving Company → Postell Quarry; 1950-01-01 to 1982-10-26; source msha-controller-operator-history
- **operator_operates_mine:** Southern Aggregates Inc → Postell Quarry; 1979-05-21 to 1982-10-26; source msha-controller-operator-history
- **controller_controls_operator:** Claussen Paving Company → Southern Aggregates Inc; 1979-05-21 to 1982-10-26; source msha-controller-operator-history
- **operator_operates_mine:** Rinker Materials Of Florida Inc → Postell Quarry; 1982-10-27 to 2008-01-22; source msha-controller-operator-history
- **controller_controls_mine:** CSR Ltd → Postell Quarry; 1982-10-27 to 2003-03-31; source msha-controller-operator-history
- **controller_controls_operator:** CSR Ltd → Rinker Materials Of Florida Inc; 1982-10-27 to 2003-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Rinker Group Ltd → Postell Quarry; 2003-04-01 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Rinker Group Ltd → Rinker Materials Of Florida Inc; 2003-04-01 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Postell Quarry; 2007-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Rinker Materials Of Florida Inc; 2007-07-10 to 2008-01-22; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Company → Postell Quarry; 2007-11-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Aggregates USA LLC → Postell Quarry; 2008-01-23 to 2010-02-25; source msha-controller-operator-history
- **controller_controls_mine:** Ready Mix USA Inc → Postell Quarry; 2008-01-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ready Mix USA Inc → Aggregates USA LLC; 2008-01-23 to 2010-02-25; source msha-controller-operator-history
- **controller_controls_mine:** Aggregates USA Holdings LLC → Postell Quarry; 2010-02-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Aggregates USA LLC → Postell Quarry; 2010-02-26 to 2017-12-29; source msha-controller-operator-history
- **controller_controls_operator:** Aggregates USA Holdings LLC → Aggregates USA LLC; 2010-02-26 to 2017-12-29; source msha-controller-operator-history
- **operator_operates_mine:** Vulcan Construction Materials, LLC → Postell Quarry; 2017-12-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vulcan Materials Company → Vulcan Construction Materials, LLC; 2017-12-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Construction Materials, LLC; 2017-12-30 to 2007-11-15; source msha-controller-operator-history