# Relationship history for MSHA mine 4202459

Current hierarchy: **CRH PLC → Western Rock Products → Paria**

- 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:** CRH PLC → Paria; 2002-05-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Paria; 2002-05-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Paria Mining, LLC → Paria; 2006-09-11 to 2007-11-18; source msha-controller-operator-history
- **controller_controls_mine:** Henry D  Alexander → Paria; 2006-09-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Henry D  Alexander → Paria Mining, LLC; 2006-09-11 to 2007-11-18; source msha-controller-operator-history
- **operator_operates_mine:** Western Rock Products → Paria; 2007-11-19 to 2013-07-14; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Western Rock Products; 2007-11-19 to 2013-07-14; source msha-controller-operator-history
- **operator_operates_mine:** Staker & Parson Co. → Paria; 2013-07-15 to 2014-04-20; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Staker & Parson Co.; 2013-07-15 to 2014-04-20; source msha-controller-operator-history
- **operator_operates_mine:** Western Rock Products → Paria; 2014-04-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Western Rock Products; 2014-04-21 to current/open; source msha-controller-operator-history