# Relationship history for MSHA mine 0405701

Current hierarchy: **Cemex S A → CEMEX Construction Materials Pacific, LLC → Black Mountain 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

- **controller_controls_mine:** Cemex S A → Black Mountain Quarry; 2000-11-03 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cemex California Cement LLC → Black Mountain Quarry; 2007-01-01 to 2009-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Cemex California Cement LLC; 2007-01-01 to 2009-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Black Mountain Quarry; 2008-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX Construction Materials Pacific, LLC → Black Mountain Quarry; 2010-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → CEMEX Construction Materials Pacific, LLC; 2010-01-01 to current/open; source msha-controller-operator-history