# Relationship history for MSHA mine 2902502

Current hierarchy: **Deborah  Autrey; Oran J Autry → Stephens Construction & Ready Mix, Inc. → Sitewinder-El Jay Screen**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **controller_controls_mine:** Deborah  Autrey et al → Sitewinder-El Jay Screen; 2008-08-22 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Stephens Construction & Ready Mix, Inc. → Sitewinder-El Jay Screen; 2018-08-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Deborah  Autrey et al → Stephens Construction & Ready Mix, Inc.; 2018-08-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Oran J Autry et al → Stephens Construction & Ready Mix, Inc.; 2018-08-21 to current/open; source msha-controller-operator-history