# Relationship history for MSHA mine 4104331

Current hierarchy: **Cemex S A → CEMEX Construction Materials South LLC → Mobile Crusher #1**

- 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:** RMC Group PLC → Mobile Crusher #1; 1999-03-31 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Mobile Crusher #1; 2001-07-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Jobe Concrete Products, Inc. → Mobile Crusher #1; 2001-12-13 to 2005-02-28; source msha-controller-operator-history
- **controller_controls_operator:** RMC Group PLC → Jobe Concrete Products, Inc.; 2001-12-13 to 2005-02-28; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX El Paso Inc → Mobile Crusher #1; 2005-03-01 to 2005-03-29; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Mobile Crusher #1; 2005-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → CEMEX El Paso Inc; 2005-03-01 to 2005-03-29; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX Construction Materials LP → Mobile Crusher #1; 2005-03-30 to 2008-08-19; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → CEMEX Construction Materials LP; 2005-03-30 to 2008-08-19; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Mobile Crusher #1; 2008-08-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX Construction Materials South LLC → Mobile Crusher #1; 2008-08-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → CEMEX Construction Materials South LLC; 2008-08-20 to current/open; source msha-controller-operator-history