# Relationship history for MSHA mine 0800750

Current hierarchy: **Cemex S A → CEMEX Construction Materials Florida, LLC → Center Hill 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

- **operator_operates_mine:** Fcs Mining Company → Center Hill Mine; 1950-01-01 to 2000-07-21; source msha-controller-operator-history
- **controller_controls_mine:** F Browne Gregg Trust → Center Hill Mine; 1950-01-01 to 2000-07-21; source msha-controller-operator-history
- **controller_controls_operator:** F Browne Gregg Trust → Fcs Mining Company; 1950-01-01 to 2000-07-21; source msha-controller-operator-history
- **controller_controls_mine:** CSR Ltd → Center Hill Mine; 1982-10-27 to 2003-03-31; source msha-controller-operator-history
- **controller_controls_mine:** CSR Ltd → Center Hill Mine; 2000-07-01 to 2003-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Rinker Materials Of Florida Inc → Center Hill Mine; 2000-07-22 to 2003-06-30; source msha-controller-operator-history
- **controller_controls_operator:** CSR Ltd → Rinker Materials Of Florida Inc; 2000-07-22 to 2003-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Rinker Group Ltd → Center Hill Mine; 2003-04-01 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Rinker Group Ltd → Rinker Materials Of Florida Inc; 2003-04-01 to 2003-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Florida Crushed Stone → Center Hill Mine; 2003-07-01 to 2008-12-18; source msha-controller-operator-history
- **controller_controls_operator:** Rinker Group Ltd → Florida Crushed Stone; 2003-07-01 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_operator:** CSR Ltd → Florida Crushed Stone; 2003-07-01 to 2003-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Center Hill Mine; 2007-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Rinker Materials Of Florida Inc; 2007-07-10 to 2003-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Florida Crushed Stone; 2007-07-10 to 2008-12-18; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → Center Hill Mine; 2008-12-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX Construction Materials Florida, LLC → Center Hill 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