# Relationship history for MSHA mine 1202390

Current hierarchy: **VOTORANTIM CIMENTOS → VCNA Prairie, Inc → Smith Valley**

- 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:** Eagle Materials LLC → Smith Valley; 2006-05-25 to 2010-05-31; source msha-controller-operator-history
- **controller_controls_mine:** John E  Dowden  et al → Smith Valley; 2006-05-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John E  Dowden  et al → Eagle Materials LLC; 2006-05-25 to 2010-05-31; source msha-controller-operator-history
- **controller_controls_operator:** L Steven  Miller  et al → Eagle Materials LLC; 2006-05-25 to 2010-05-31; source msha-controller-operator-history
- **controller_controls_mine:** VOTORANTIM CIMENTOS → Smith Valley; 2008-02-02 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** VOTORANTIM CIMENTOS → Smith Valley; 2008-04-11 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** VCNA Prairie Aggregates Indiana, Inc → Smith Valley; 2010-06-01 to 2013-04-25; source msha-controller-operator-history
- **controller_controls_operator:** VOTORANTIM CIMENTOS → VCNA Prairie Aggregates Indiana, Inc; 2010-06-01 to 2013-04-25; source msha-controller-operator-history
- **operator_operates_mine:** VCNA Prairie, Inc → Smith Valley; 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