# Relationship history for MSHA mine 1200067

Current hierarchy: **Vulcan Materials Company → Vulcan Construction Materials, LLC → Harrison County 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) → Harrison County Quarry; 1950-01-01 to 2007-11-15; source msha-controller-operator-history
- **operator_operates_mine:** Mathes Quarry → Harrison County Quarry; 1950-01-01 to 2005-02-01; source msha-controller-operator-history
- **controller_controls_mine:** James E  Mathes Et Al → Harrison County Quarry; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James E  Mathes Et Al → Mathes Quarry; 1950-01-01 to 2005-02-01; source msha-controller-operator-history
- **operator_operates_mine:** Mathes Quarry LLC → Harrison County Quarry; 2005-02-02 to 2006-05-17; source msha-controller-operator-history
- **controller_controls_mine:** James E  Mathes Et Al → Harrison County Quarry; 2005-02-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James E  Mathes Et Al → Mathes Quarry LLC; 2005-02-02 to 2006-05-17; source msha-controller-operator-history
- **operator_operates_mine:** Vulcan Construction Materials, LLC → Harrison County Quarry; 2006-05-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Construction Materials, LLC; 2006-05-18 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Company → Harrison County 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