# Relationship history for MSHA mine 2602295

Current hierarchy: **Cemex S A → Rinker Materials West LLC → Portable Crusher**

- 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:** CSR Ltd → Portable Crusher; 1990-02-02 to 2003-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Rinker Materials West Llc → Portable Crusher; 1996-06-01 to 2002-01-14; source msha-controller-operator-history
- **controller_controls_operator:** CSR Ltd → Rinker Materials West Llc; 1996-06-01 to 2002-01-14; source msha-controller-operator-history
- **controller_controls_mine:** CSR Ltd → Portable Crusher; 1999-04-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CSR → Portable Crusher; 2002-01-15 to 2002-05-13; source msha-controller-operator-history
- **controller_controls_operator:** CSR Ltd → CSR; 2002-01-15 to 2002-05-13; source msha-controller-operator-history
- **operator_operates_mine:** Rinker Materials West LLC → Portable Crusher; 2002-05-14 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** CSR Ltd → Rinker Materials West LLC; 2002-05-14 to 2003-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Rinker Group Ltd → Portable Crusher; 2003-04-01 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Rinker Group Ltd → Rinker Materials West Llc; 2003-04-01 to 2002-01-14; source msha-controller-operator-history
- **controller_controls_operator:** Rinker Group Ltd → Rinker Materials West LLC; 2003-04-01 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Portable Crusher; 2007-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Rinker Materials West Llc; 2007-07-10 to 2002-01-14; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Rinker Materials West LLC; 2007-07-10 to current/open; source msha-controller-operator-history