# Relationship history for MSHA mine 0404140

Current hierarchy: **Cemex S A → CEMEX Construction Materials Pacific, LLC → Moorpark Quarry**

- 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

- **operator_operates_mine:** Blue Star Ready Mix Inc → Moorpark Quarry; 1950-01-01 to 1993-10-01; source msha-controller-operator-history
- **controller_controls_mine:** James P  Sandoval → Moorpark Quarry; 1950-01-01 to 1993-10-01; source msha-controller-operator-history
- **controller_controls_operator:** James P  Sandoval → Blue Star Ready Mix Inc; 1950-01-01 to 1993-10-01; source msha-controller-operator-history
- **controller_controls_mine:** Southdown Inc → Moorpark Quarry; 1990-02-08 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Southdown California Aggregates → Moorpark Quarry; 1993-10-02 to 2001-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Southdown Inc → Southdown California Aggregates; 1993-10-02 to 2001-07-09; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX Construction Materials LP → Moorpark Quarry; 2001-07-10 to 2015-02-23; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Moorpark Quarry; 2001-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → CEMEX Construction Materials LP; 2001-07-10 to 2015-02-23; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Moorpark Quarry; 2008-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX Construction Materials Pacific, LLC → Moorpark Quarry; 2015-02-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → CEMEX Construction Materials Pacific, LLC; 2015-02-24 to current/open; source msha-controller-operator-history