# Relationship history for MSHA mine 4104711

Current hierarchy: **Vulcan Materials Company → Vulcan Construction Materials, LLC → Mico 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) → Mico Quarry; 1950-01-01 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Lattimore Properties Inc → Mico Quarry; 1950-01-01 to 2011-03-30; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Company → Mico Quarry; 2007-11-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lattimore Materials Corp. → Mico Quarry; 2008-02-15 to 2013-05-31; source msha-controller-operator-history
- **controller_controls_operator:** Lattimore Properties Inc → Lattimore Materials Corp.; 2008-02-15 to 2011-03-30; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Mico Quarry; 2011-03-31 to 2015-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Lattimore Materials Corp.; 2011-03-31 to 2013-05-31; source msha-controller-operator-history
- **operator_operates_mine:** Vulcan Construction Materials, LLC → Mico Quarry; 2013-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vulcan Materials Company → Vulcan Construction Materials, LLC; 2013-06-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Construction Materials, LLC; 2013-06-01 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → Mico Quarry; 2015-07-10 to 2025-06-22; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Lattimore Materials Corp.; 2015-07-10 to 2013-05-31; source msha-controller-operator-history
- **controller_controls_mine:** Amrize Ltd → Mico Quarry; 2025-06-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Amrize Ltd → Lattimore Materials Corp.; 2025-06-23 to 2013-05-31; source msha-controller-operator-history