# Relationship history for MSHA mine 4104941

Current hierarchy: **Brad  West → QHaul Inc → QHaul Gonzalez Quarry**

- 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:** Apache Aggregate Products LLC → QHaul Gonzalez Quarry; 2012-07-05 to 2014-08-24; source msha-controller-operator-history
- **controller_controls_mine:** Rod A  Welch et al → QHaul Gonzalez Quarry; 2012-07-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rod A  Welch et al → Apache Aggregate Products LLC; 2012-07-05 to 2014-08-24; source msha-controller-operator-history
- **controller_controls_operator:** Jon R  Sandstrom et al → Apache Aggregate Products LLC; 2012-07-05 to 2014-08-24; source msha-controller-operator-history
- **controller_controls_operator:** Sheldon B  Gosney et al → Apache Aggregate Products LLC; 2012-07-05 to 2014-08-24; source msha-controller-operator-history
- **operator_operates_mine:** QHaul Inc → QHaul Gonzalez Quarry; 2014-08-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Brad  West → QHaul Gonzalez Quarry; 2014-08-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad  West → QHaul Inc; 2014-08-25 to current/open; source msha-controller-operator-history