# Relationship history for MSHA mine 0900231

Current hierarchy: **IMin Partners → KaMin LLC. → Gordon 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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Engelhard Corp → Gordon Plant; 1950-01-01 to 2006-07-31; source msha-controller-operator-history
- **operator_operates_mine:** Freeport Kaolin Company → Gordon Plant; 1950-01-01 to 1984-01-16; source msha-controller-operator-history
- **controller_controls_mine:** Freeport Minerals Company → Gordon Plant; 1950-01-01 to 1985-02-12; source msha-controller-operator-history
- **controller_controls_operator:** Freeport Minerals Company → Freeport Kaolin Company; 1950-01-01 to 1984-01-16; source msha-controller-operator-history
- **operator_operates_mine:** Freeport Kaolin Company → Gordon Plant; 1984-01-17 to 1985-02-12; source msha-controller-operator-history
- **controller_controls_mine:** Phosphate Resource Partners Lp → Gordon Plant; 1984-01-17 to 1985-02-12; source msha-controller-operator-history
- **controller_controls_operator:** Phosphate Resource Partners Lp → Freeport Kaolin Company; 1984-01-17 to 1985-02-12; source msha-controller-operator-history
- **operator_operates_mine:** BASF Catalysts LLC → Gordon Plant; 1985-02-13 to 2010-03-31; source msha-controller-operator-history
- **controller_controls_operator:** Engelhard Corp → BASF Catalysts LLC; 1985-02-13 to 2006-07-31; source msha-controller-operator-history
- **controller_controls_mine:** BASF SE → Gordon Plant; 2006-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** BASF SE → BASF Catalysts LLC; 2006-08-01 to 2010-03-31; source msha-controller-operator-history
- **controller_controls_mine:** BASF SE → Gordon Plant; 2007-03-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** IMin Partners → Gordon Plant; 2008-04-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** BASF Corporation → Gordon Plant; 2010-04-01 to 2022-09-30; source msha-controller-operator-history
- **controller_controls_operator:** BASF SE → BASF Corporation; 2010-04-01 to 2022-09-30; source msha-controller-operator-history
- **operator_operates_mine:** KaMin LLC. → Gordon Plant; 2022-10-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** IMin Partners → KaMin LLC.; 2022-10-01 to current/open; source msha-controller-operator-history