# Relationship history for MSHA mine 3102037

Current hierarchy: **Cementos Pacasmayo SSA → Suzorite Mineral Products Inc → Cherokee 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

- **operator_operates_mine:** Cherokee Minerals Inc → Cherokee Plant; 1989-05-01 to 1994-12-06; source msha-controller-operator-history
- **controller_controls_mine:** Whittaker-Clark & Daniels Inc → Cherokee Plant; 1989-05-01 to 1994-12-06; source msha-controller-operator-history
- **controller_controls_operator:** Whittaker-Clark & Daniels Inc → Cherokee Minerals Inc; 1989-05-01 to 1994-12-06; source msha-controller-operator-history
- **controller_controls_mine:** Zemex Corp → Cherokee Plant; 1994-12-01 to 2003-03-02; source msha-controller-operator-history
- **operator_operates_mine:** Suzorite Mineral Products Inc → Cherokee Plant; 1994-12-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Zemex Corp → Suzorite Mineral Products Inc; 1994-12-07 to 2003-03-02; source msha-controller-operator-history
- **controller_controls_mine:** Cementos Pacasmayo SSA → Cherokee Plant; 2003-03-03 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cementos Pacasmayo SSA → Suzorite Mineral Products Inc; 2003-03-03 to current/open; source msha-controller-operator-history