# Relationship history for MSHA mine 3402114

Current hierarchy: **Vulcan Materials Company → Vulcan Construction Materials, LLC → Blue River 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) → Blue River Quarry; 1950-01-01 to 2007-11-15; source msha-controller-operator-history
- **controller_controls_mine:** Vulcan Materials Company → Blue River Quarry; 2007-11-16 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Connolly Bros LLC → Blue River Quarry; 2010-11-01 to 2011-07-10; source msha-controller-operator-history
- **controller_controls_mine:** Pam S  Connolly et al → Blue River Quarry; 2010-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Pam S  Connolly et al → Connolly Bros LLC; 2010-11-01 to 2011-07-10; source msha-controller-operator-history
- **controller_controls_operator:** Roy T  Connolly et al → Connolly Bros LLC; 2010-11-01 to 2011-07-10; source msha-controller-operator-history
- **operator_operates_mine:** Blessing Gravel LLC → Blue River Quarry; 2011-07-11 to 2026-02-25; source msha-controller-operator-history
- **controller_controls_mine:** Joyce L  Stowers → Blue River Quarry; 2011-07-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joyce L  Stowers → Blessing Gravel LLC; 2011-07-11 to 2026-02-25; source msha-controller-operator-history
- **operator_operates_mine:** Vulcan Construction Materials, LLC → Blue River Quarry; 2026-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Vulcan Materials Company → Vulcan Construction Materials, LLC; 2026-02-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Legacy Vulcan Corp (Form:Vulcan Materials Co) → Vulcan Construction Materials, LLC; 2026-02-26 to 2007-11-15; source msha-controller-operator-history