# Relationship history for MSHA mine 0800225

Current hierarchy: **The Chemours Company → The Chemours Company FC LLC → The Chemours Company FC LLC**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** E I Dupont De Nemours & Co Inc → The Chemours Company FC LLC; 1950-01-01 to 2015-06-30; source msha-controller-operator-history
- **controller_controls_mine:** EI DuPont De Nemours & Co Inc → The Chemours Company FC LLC; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** EI DuPont De Nemours & Co Inc → E I Dupont De Nemours & Co Inc; 1950-01-01 to 2015-06-30; source msha-controller-operator-history
- **operator_operates_mine:** The Chemours Company FC LLC → The Chemours Company FC LLC; 2015-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** The Chemours Company → The Chemours Company FC LLC; 2015-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** The Chemours Company → The Chemours Company FC LLC; 2015-07-01 to current/open; source msha-controller-operator-history