# Relationship history for MSHA mine 0801278

Current hierarchy: **F Browne Gregg Trust → Consolidated Minerals Inc → High Calcium Carbonate Plant**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** F Browne Gregg Trust → High Calcium Carbonate Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Florida Crushed Stone Company → High Calcium Carbonate Plant; 1999-10-01 to 2000-07-21; source msha-controller-operator-history
- **controller_controls_operator:** F Browne Gregg Trust → Florida Crushed Stone Company; 1999-10-01 to 2000-07-21; source msha-controller-operator-history
- **controller_controls_mine:** CSR Ltd → High Calcium Carbonate Plant; 2000-07-01 to 2003-03-31; source msha-controller-operator-history
- **operator_operates_mine:** Florida Crushed Stone → High Calcium Carbonate Plant; 2000-07-22 to 2001-02-06; source msha-controller-operator-history
- **controller_controls_operator:** CSR Ltd → Florida Crushed Stone; 2000-07-22 to 2001-02-06; source msha-controller-operator-history
- **operator_operates_mine:** Consolidated Minerals Inc → High Calcium Carbonate Plant; 2001-02-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** F Browne Gregg Trust → High Calcium Carbonate Plant; 2001-02-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** F Browne Gregg Trust → Consolidated Minerals Inc; 2001-02-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Rinker Group Ltd → High Calcium Carbonate Plant; 2003-04-01 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Rinker Group Ltd → Florida Crushed Stone; 2003-04-01 to 2001-02-06; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → High Calcium Carbonate Plant; 2007-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → Florida Crushed Stone; 2007-07-10 to 2001-02-06; source msha-controller-operator-history