# Relationship history for MSHA mine 0202670

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

- 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:** Calmat Company → CEMEX-PIMA; 1983-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → CEMEX-PIMA; 1990-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Calmat Company Of Arizona → CEMEX-PIMA; 1996-08-01 to 1998-05-29; source msha-controller-operator-history
- **controller_controls_operator:** Calmat Company → Calmat Company Of Arizona; 1996-08-01 to 1998-05-29; source msha-controller-operator-history
- **operator_operates_mine:** Sunward Materials → CEMEX-PIMA; 1998-05-30 to 2001-07-11; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Sunward Materials; 1998-05-30 to 2001-07-11; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → CEMEX-PIMA; 2001-07-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cemex Construction Materials, Inc. → CEMEX-PIMA; 2001-07-12 to 2003-08-11; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Cemex Construction Materials, Inc.; 2001-07-12 to 2003-08-11; source msha-controller-operator-history
- **operator_operates_mine:** Cemex Construction Materials LP → CEMEX-PIMA; 2003-08-12 to 2008-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Cemex Construction Materials LP; 2003-08-12 to 2008-07-31; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX Construction Materials South LLC → CEMEX-PIMA; 2008-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → CEMEX-PIMA; 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