# Relationship history for MSHA mine 4604175

Current hierarchy: **Union Carbide Corp → Union Carbide Corp-Metals Division → #10 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Costa Dominick → #10 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Union Carbide Corp → #10 Mine; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Coal Management Inc → #10 Mine; 1974-07-01 to 1980-01-31; source msha-controller-operator-history
- **controller_controls_operator:** Costa Dominick → Coal Management Inc; 1974-07-01 to 1980-01-31; source msha-controller-operator-history
- **operator_operates_mine:** Union Carbide Corp-Metals Division → #10 Mine; 1980-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Union Carbide Corp → Union Carbide Corp-Metals Division; 1980-02-01 to current/open; source msha-controller-operator-history