# Relationship history for MSHA mine 0801323

Current hierarchy: **Cemex S A → Cemex Construction Materials Florida LLC → RMC Bronson Mine**

- 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 → RMC Bronson Mine; 1999-10-16 to 2005-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → RMC Bronson Mine; 2001-07-10 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** RMC South Florida, Inc. → RMC Bronson Mine; 2003-07-10 to 2005-12-31; source msha-controller-operator-history
- **controller_controls_operator:** RMC Group PLC → RMC South Florida, Inc.; 2003-07-10 to 2005-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → RMC Bronson Mine; 2005-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → RMC South Florida, Inc.; 2005-03-01 to 2005-12-31; source msha-controller-operator-history
- **operator_operates_mine:** Cemex Construction Materials LP → RMC Bronson Mine; 2006-01-01 to 2008-12-18; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Cemex Construction Materials LP; 2006-01-01 to 2008-12-18; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → RMC Bronson Mine; 2008-12-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Cemex Construction Materials Florida LLC → RMC Bronson Mine; 2008-12-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Cemex Construction Materials Florida LLC; 2008-12-19 to current/open; source msha-controller-operator-history