# Relationship history for MSHA mine 1519543

Current hierarchy: **CRH PLC → Mountain   Materials Inc. → BRUSHY CREEK STONE**

- 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:** CRH PLC → BRUSHY CREEK STONE; 2006-01-23 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Brushy Creek Stone LLC → BRUSHY CREEK STONE; 2010-10-15 to 2019-08-11; source msha-controller-operator-history
- **controller_controls_mine:** Jeffery  Adkins et al → BRUSHY CREEK STONE; 2010-10-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Jeffery  Adkins et al → Brushy Creek Stone LLC; 2010-10-15 to 2019-08-11; source msha-controller-operator-history
- **controller_controls_operator:** Vernon  Adkins et al → Brushy Creek Stone LLC; 2010-10-15 to 2019-08-11; source msha-controller-operator-history
- **operator_operates_mine:** Mountain   Materials Inc. → BRUSHY CREEK STONE; 2019-08-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Mountain   Materials Inc.; 2019-08-12 to current/open; source msha-controller-operator-history