# Relationship history for MSHA mine 1519331

Current hierarchy: **Robert D  Jessee → Stoneridge Resources Inc. → No. 2 Auger**

- 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:** Robert D  Jessee → No. 2 Auger; 2008-07-18 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Stoneridge Resources Inc. → No. 2 Auger; 2008-10-16 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert D  Jessee → Stoneridge Resources Inc.; 2008-10-16 to current/open; source msha-controller-operator-history