# Relationship history for MSHA mine 1401700

Current hierarchy: **Kevin L  Starbuck → Starbuck Rock LLC → Elk City**

- 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:** Kevin L  Starbuck → Elk City; 1985-03-25 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Starbuck Rock LLC → Elk City; 2009-02-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin L  Starbuck → Starbuck Rock LLC; 2009-02-21 to current/open; source msha-controller-operator-history