# Relationship history for MSHA mine 0202510

Current hierarchy: **Cemex S A → CEMEX Construction Materials South LLC → CEMEX - NOGALES**

- 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:** Peter Kiewit Sons' Inc → CEMEX - NOGALES; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Ashland Inc → CEMEX - NOGALES; 1987-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tanner Companies → CEMEX - NOGALES; 1989-06-01 to 1994-05-25; source msha-controller-operator-history
- **controller_controls_operator:** Ashland Inc → Tanner Companies; 1989-06-01 to 1994-05-25; source msha-controller-operator-history
- **operator_operates_mine:** United Metro Materials Inc → CEMEX - NOGALES; 1994-05-26 to 2002-09-25; source msha-controller-operator-history
- **controller_controls_operator:** Peter Kiewit Sons' Inc → United Metro Materials Inc; 1994-05-26 to 2002-09-25; source msha-controller-operator-history
- **operator_operates_mine:** RINKER MATERIALS WESTERN INC → CEMEX - NOGALES; 2002-09-26 to 2004-07-31; source msha-controller-operator-history
- **controller_controls_mine:** CSR Ltd → CEMEX - NOGALES; 2002-09-26 to 2003-03-31; source msha-controller-operator-history
- **controller_controls_operator:** CSR Ltd → RINKER MATERIALS WESTERN INC; 2002-09-26 to 2003-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Rinker Group Ltd → CEMEX - NOGALES; 2003-04-01 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Rinker Group Ltd → RINKER MATERIALS WESTERN INC; 2003-04-01 to 2004-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Rinker Materials → CEMEX - NOGALES; 2004-08-01 to 2008-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Rinker Group Ltd → CEMEX - NOGALES; 2004-08-01 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Rinker Group Ltd → Rinker Materials; 2004-08-01 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → CEMEX - NOGALES; 2007-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → RINKER MATERIALS WESTERN INC; 2007-07-10 to 2004-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Rinker Materials; 2007-07-10 to 2008-07-31; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX Construction Materials South LLC → CEMEX - NOGALES; 2008-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → CEMEX - NOGALES; 2008-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → CEMEX Construction Materials South LLC; 2008-08-01 to current/open; source msha-controller-operator-history