# Relationship history for MSHA mine 2402267

Current hierarchy: **CRH PLC → Goose Bay Equipment Inc → Portable Colberg Screen**

- 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

- **operator_operates_mine:** Goose Bay Equipment Inc. → Portable Colberg Screen; 2002-05-24 to 2006-07-04; source msha-controller-operator-history
- **controller_controls_mine:** Dennis F  Carver → Portable Colberg Screen; 2002-05-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dennis F  Carver → Goose Bay Equipment Inc.; 2002-05-24 to 2006-07-04; source msha-controller-operator-history
- **operator_operates_mine:** Goose Bay Equipment Inc → Portable Colberg Screen; 2006-07-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** CRH PLC → Portable Colberg Screen; 2006-07-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CRH PLC → Goose Bay Equipment Inc; 2006-07-05 to current/open; source msha-controller-operator-history