# Relationship history for MSHA mine 4503102

Current hierarchy: **Steve A  Gonzales; Dan  Barnham Jr → FIGHTING CREEK → S. A. Gonzales Const Inc**

- 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:** S A Gonzales Construction Inc → S. A. Gonzales Const Inc; 1986-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Dan  Barnham Jr  et al → S. A. Gonzales Const Inc; 1986-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Dan  Barnham Jr  et al → S A Gonzales Construction Inc; 1986-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Steve A  Gonzales  et al → S A Gonzales Construction Inc; 1986-09-01 to current/open; source msha-controller-operator-history