# Relationship history for MSHA mine 3800041

Current hierarchy: **RSP Minerals → Dixie Clay (VM Buyer LLC) → Dixie Clay (VM Buyer LLC)**

- 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

- **operator_operates_mine:** Dixie Clay Company → Dixie Clay (VM Buyer LLC); 1950-01-01 to 2012-12-31; source msha-controller-operator-history
- **controller_controls_mine:** R T Vanderbilt Company Inc → Dixie Clay (VM Buyer LLC); 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** R T Vanderbilt Company Inc → Dixie Clay Company; 1950-01-01 to 2012-12-31; source msha-controller-operator-history
- **controller_controls_mine:** R T Vanderbilt Company Inc → Dixie Clay (VM Buyer LLC); 2007-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Vanderbilt Minerals, LLC-Dixie Clay Div → Dixie Clay (VM Buyer LLC); 2013-01-01 to 2026-06-09; source msha-controller-operator-history
- **controller_controls_operator:** R T Vanderbilt Company Inc → Vanderbilt Minerals, LLC-Dixie Clay Div; 2013-01-01 to 2026-06-09; source msha-controller-operator-history
- **operator_operates_mine:** Dixie Clay (VM Buyer LLC) → Dixie Clay (VM Buyer LLC); 2026-06-10 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** RSP Minerals → Dixie Clay (VM Buyer LLC); 2026-06-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** RSP Minerals → Dixie Clay (VM Buyer LLC); 2026-06-10 to current/open; source msha-controller-operator-history