# Relationship history for MSHA mine 0200165

Current hierarchy: **Tableros Prearmados De Cemento, SA → PR Gypsum, LLC → PR GYPSUM - WINKELMAN 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

- **operator_operates_mine:** Superior Companies → PR GYPSUM - WINKELMAN MINE; 1950-01-01 to 1997-09-14; source msha-controller-operator-history
- **controller_controls_mine:** Archer V  Shelton → PR GYPSUM - WINKELMAN MINE; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Archer V  Shelton → Superior Companies; 1950-01-01 to 1997-09-14; source msha-controller-operator-history
- **operator_operates_mine:** Superior Materials → PR GYPSUM - WINKELMAN MINE; 1997-09-15 to 2002-09-25; source msha-controller-operator-history
- **controller_controls_mine:** Peter Kiewit Sons' Inc → PR GYPSUM - WINKELMAN MINE; 1997-09-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Peter Kiewit Sons' Inc → Superior Materials; 1997-09-15 to 2002-09-25; source msha-controller-operator-history
- **operator_operates_mine:** RINKER MATERIALS WESTERN INC → PR GYPSUM - WINKELMAN MINE; 2002-09-26 to 2004-07-31; source msha-controller-operator-history
- **controller_controls_mine:** CSR Ltd → PR GYPSUM - WINKELMAN MINE; 2002-09-26 to 2003-03-31; source msha-controller-operator-history
- **controller_controls_operator:** CSR Ltd → RINKER MATERIALS WESTERN INC; 2002-09-26 to 2003-03-31; source msha-controller-operator-history
- **controller_controls_mine:** Rinker Group Ltd → PR GYPSUM - WINKELMAN MINE; 2003-04-01 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Rinker Group Ltd → RINKER MATERIALS WESTERN INC; 2003-04-01 to 2004-07-31; source msha-controller-operator-history
- **operator_operates_mine:** RINKER MATERIALS → PR GYPSUM - WINKELMAN MINE; 2004-08-01 to 2008-07-31; source msha-controller-operator-history
- **controller_controls_mine:** Rinker Group Ltd → PR GYPSUM - WINKELMAN MINE; 2004-08-01 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_operator:** Rinker Group Ltd → RINKER MATERIALS; 2004-08-01 to 2007-07-09; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → PR GYPSUM - WINKELMAN MINE; 2007-07-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → RINKER MATERIALS WESTERN INC; 2007-07-10 to 2004-07-31; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → RINKER MATERIALS; 2007-07-10 to 2008-07-31; source msha-controller-operator-history
- **operator_operates_mine:** CEMEX Construction Materials South LLC → PR GYPSUM - WINKELMAN MINE; 2008-08-01 to 2011-12-21; source msha-controller-operator-history
- **controller_controls_mine:** Cemex S A → PR GYPSUM - WINKELMAN MINE; 2008-08-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Cemex S A → CEMEX Construction Materials South LLC; 2008-08-01 to 2011-12-21; source msha-controller-operator-history
- **operator_operates_mine:** PR Gypsum, LLC → PR GYPSUM - WINKELMAN MINE; 2011-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Tableros Prearmados De Cemento, SA → PR GYPSUM - WINKELMAN MINE; 2011-12-22 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Tableros Prearmados De Cemento, SA → PR Gypsum, LLC; 2011-12-22 to current/open; source msha-controller-operator-history