# Relationship history for MSHA mine 0103232

Current hierarchy: **Cemex S A → Cemex, Inc. → St. Stephens Quarry CEMEX, Inc.**

- 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 → St. Stephens Quarry CEMEX, Inc.; 1994-09-09 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cemex Inc → St. Stephens Quarry CEMEX, Inc.; 2001-08-27 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Cemex Inc; 2001-08-27 to current/open; source msha-controller-operator-history