# Relationship history for MSHA mine 1517819

Current hierarchy: **Sargeant Barry → Eel River Resources Inc → Jetson/Bull Creek Mine**

- 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

- **controller_controls_mine:** Sargeant Barry Et Al → Jetson/Bull Creek Mine; 1995-02-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Eel River Resources Inc → Jetson/Bull Creek Mine; 1996-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Sargeant Barry Et Al → Eel River Resources Inc; 1996-07-01 to current/open; source msha-controller-operator-history