# Relationship history for MSHA mine 3800033

Current hierarchy: **RemSom, LLC → US Brick, LLC → USB Columbia (Mobley-Koon/Dry Branch))**

- 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:** Carolina Ceramics Inc → USB Columbia (Mobley-Koon/Dry Branch)); 1950-01-01 to 1992-02-28; source msha-controller-operator-history
- **controller_controls_mine:** Brantley Eugene L → USB Columbia (Mobley-Koon/Dry Branch)); 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brantley Eugene L → Carolina Ceramics Inc; 1950-01-01 to 1992-02-28; source msha-controller-operator-history
- **operator_operates_mine:** Carolina Ceramics Inc → USB Columbia (Mobley-Koon/Dry Branch)); 1992-02-29 to 1997-03-06; source msha-controller-operator-history
- **controller_controls_mine:** Joe  Pike → USB Columbia (Mobley-Koon/Dry Branch)); 1992-02-29 to 1997-03-06; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Pike → Carolina Ceramics Inc; 1992-02-29 to 1997-03-06; source msha-controller-operator-history
- **operator_operates_mine:** US Brick, LLC → USB Columbia (Mobley-Koon/Dry Branch)); 1997-03-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Michael  Borden → USB Columbia (Mobley-Koon/Dry Branch)); 1997-03-07 to 2021-11-15; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Borden → US Brick, LLC; 1997-03-07 to 2021-11-15; source msha-controller-operator-history
- **controller_controls_mine:** RemSom, LLC → USB Columbia (Mobley-Koon/Dry Branch)); 2021-11-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** RemSom, LLC → US Brick, LLC; 2021-11-16 to current/open; source msha-controller-operator-history