# Relationship history for MSHA mine 0103270

Current hierarchy: **Vulcan Materials Company → VULCAN CONSTRUCTION MATERIALS, LLC → LAKESHORE 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) → LAKESHORE QUARRY; 1950-01-01 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Lafarge S A → LAKESHORE QUARRY; 2001-07-12 to 2015-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Lafarge S A → LAKESHORE QUARRY; 2001-07-12 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Birmingham Aggregates LLC → LAKESHORE QUARRY; 2003-08-14 to 2008-11-03; source msha-controller-operator-history
- **controller_controls_mine:** Lafarge S A → LAKESHORE QUARRY; 2003-08-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge S A → Birmingham Aggregates LLC; 2003-08-14 to 2008-11-03; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Company → LAKESHORE QUARRY; 2007-11-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Lafarge Aggregates Southeast Inc → LAKESHORE QUARRY; 2008-11-04 to 2011-04-20; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge S A → Lafarge Aggregates Southeast Inc; 2008-11-04 to 2011-04-20; source msha-controller-operator-history
- **operator_operates_mine:** Lafarge Building Materials Inc → LAKESHORE QUARRY; 2011-04-21 to 2011-10-02; source msha-controller-operator-history
- **controller_controls_operator:** Lafarge S A → Lafarge Building Materials Inc; 2011-04-21 to 2011-10-02; source msha-controller-operator-history
- **operator_operates_mine:** Vulcan Construction Materials, LLC → LAKESHORE QUARRY; 2011-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vulcan Materials Company → Vulcan Construction Materials, LLC; 2011-10-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Construction Materials, LLC; 2011-10-03 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Holcim Ltd → LAKESHORE QUARRY; 2015-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Holcim Ltd → Lafarge Building Materials Inc; 2015-07-10 to 2011-10-02; source msha-controller-operator-history