# Relationship history for MSHA mine 1517956

Current hierarchy: **Eurmel  Hunter → Hunter Excavating Inc → Travis Creek #1 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

- **operator_operates_mine:** Hunter Excavating Inc → Travis Creek #1 Mine; 1997-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Eurmel  Hunter → Travis Creek #1 Mine; 1997-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Eurmel  Hunter → Hunter Excavating Inc; 1997-07-01 to current/open; source msha-controller-operator-history