# Relationship history for MSHA mine 4003392

Current hierarchy: **Timothy W  Evans Sr → Tackett Creek Mining, Inc. → Davis Creek Strip**

- 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:** Timothy W  Evans Sr → Davis Creek Strip; 2009-05-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tackett Creek Mining, Inc. → Davis Creek Strip; 2010-11-18 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Timothy W  Evans Sr → Tackett Creek Mining, Inc.; 2010-11-18 to current/open; source msha-controller-operator-history