# Relationship history for MSHA mine 1202255

Current hierarchy: **VOTORANTIM CIMENTOS → VCNA Prairie,Inc. → Yard 103 - Shelbyville**

- 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:** Prairie Group → Yard 103 - Shelbyville; 1984-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Robert D. Esteb Sand & Gravel → Yard 103 - Shelbyville; 1999-07-01 to 2007-07-16; source msha-controller-operator-history
- **controller_controls_mine:** Robert D  Esteb → Yard 103 - Shelbyville; 1999-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert D  Esteb → Robert D. Esteb Sand & Gravel; 1999-07-01 to 2007-07-16; source msha-controller-operator-history
- **operator_operates_mine:** Prairie Materials → Yard 103 - Shelbyville; 2007-07-17 to 2008-04-10; source msha-controller-operator-history
- **controller_controls_operator:** Prairie Group → Prairie Materials; 2007-07-17 to 2008-04-10; source msha-controller-operator-history
- **controller_controls_mine:** VOTORANTIM CIMENTOS → Yard 103 - Shelbyville; 2008-02-02 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** VCNA Prairie Aggregates IN,Inc. → Yard 103 - Shelbyville; 2008-04-11 to 2013-04-25; source msha-controller-operator-history
- **controller_controls_mine:** VOTORANTIM CIMENTOS → Yard 103 - Shelbyville; 2008-04-11 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** VOTORANTIM CIMENTOS → VCNA Prairie Aggregates IN,Inc.; 2008-04-11 to 2013-04-25; source msha-controller-operator-history
- **operator_operates_mine:** VCNA Prairie,Inc. → Yard 103 - Shelbyville; 2013-04-26 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** VOTORANTIM CIMENTOS → VCNA Prairie,Inc.; 2013-04-26 to current/open; source msha-controller-operator-history