# Relationship history for MSHA mine 0901026

Current hierarchy: **Vulcan Materials Company → Vulcan Construction Materials, LLC → Adairsville 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Adairsville Quarry; 1950-01-01 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Jim Walter Corp → Adairsville Quarry; 1950-01-01 to 1989-05-30; source msha-controller-operator-history
- **operator_operates_mine:** Georgia Marble Company → Adairsville Quarry; 1988-06-01 to 1989-05-30; source msha-controller-operator-history
- **controller_controls_operator:** Jim Walter Corp → Georgia Marble Company; 1988-06-01 to 1989-05-30; source msha-controller-operator-history
- **operator_operates_mine:** Georgia Marble Aggregates Corp → Adairsville Quarry; 1989-05-31 to 1989-11-21; source msha-controller-operator-history
- **controller_controls_mine:** Imerys S A → Adairsville Quarry; 1989-05-31 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Imerys S A → Georgia Marble Aggregates Corp; 1989-05-31 to 1989-11-21; source msha-controller-operator-history
- **operator_operates_mine:** Vulcan Construction Materials, LLC → Adairsville Quarry; 1989-11-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Construction Materials, LLC; 1989-11-22 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Company → Adairsville Quarry; 2007-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vulcan Materials Company → Vulcan Construction Materials, LLC; 2007-11-16 to current/open; source msha-controller-operator-history