# Relationship history for MSHA mine 1002322

Current hierarchy: **CRH PLC → Idaho Materials and Construction → IMC Pocatello Portable Screening Plant**

- 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 → IMC Pocatello Portable Screening Plant; 2000-03-27 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → IMC Pocatello Portable Screening Plant; 2002-05-30 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Staker Parson Companies → IMC Pocatello Portable Screening Plant; 2020-04-27 to 2021-04-30; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Staker Parson Companies; 2020-04-27 to 2021-04-30; source msha-controller-operator-history
- **operator_operates_mine:** Idaho Materials and Construction → IMC Pocatello Portable Screening Plant; 2021-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Idaho Materials and Construction; 2021-05-01 to current/open; source msha-controller-operator-history