# Relationship history for MSHA mine 4100060

Current hierarchy: **GCC SAB de CV → GCC Permian → Odessa Cement 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

- **operator_operates_mine:** Southdown Inc → Odessa Cement Plant; 1950-01-01 to 2001-05-22; source msha-controller-operator-history
- **controller_controls_mine:** Southdown Inc → Odessa Cement Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Southdown Inc → Southdown Inc; 1950-01-01 to 2001-05-22; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Odessa Cement Plant; 1994-09-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cemex Inc → Odessa Cement Plant; 2001-05-23 to 2009-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Cemex Inc; 2001-05-23 to 2009-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Odessa Cement Plant; 2008-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX Construction Materials South LLC → Odessa Cement Plant; 2010-01-01 to 2016-11-27; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → CEMEX Construction Materials South LLC; 2010-01-01 to 2016-11-27; source msha-controller-operator-history
- **operator_operates_mine:** GCC Permian → Odessa Cement Plant; 2016-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** GCC SAB de CV → Odessa Cement Plant; 2016-11-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** GCC SAB de CV → GCC Permian; 2016-11-28 to current/open; source msha-controller-operator-history