# Relationship history for MSHA mine 0301859

Current hierarchy: **Bob James Fecho → Dixie Crystal Co. → Twin Creek 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

- **controller_controls_mine:** Tim  Hill → Twin Creek Mine; 1989-11-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Crystal Hills  Mining Company → Twin Creek Mine; 2001-12-17 to 2003-11-16; source msha-controller-operator-history
- **controller_controls_operator:** Tim  Hill → Crystal Hills  Mining Company; 2001-12-17 to 2003-11-16; source msha-controller-operator-history
- **operator_operates_mine:** Twin Creek Mine → Twin Creek Mine; 2003-11-17 to 2014-07-01; source msha-controller-operator-history
- **controller_controls_mine:** Elizabeth  Kaelin → Twin Creek Mine; 2003-11-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Elizabeth  Kaelin → Twin Creek Mine; 2003-11-17 to 2014-07-01; source msha-controller-operator-history
- **operator_operates_mine:** Dixie Crystal Co. → Twin Creek Mine; 2014-07-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Bob James Fecho → Twin Creek Mine; 2014-07-02 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bob James Fecho → Dixie Crystal Co.; 2014-07-02 to current/open; source msha-controller-operator-history