# Relationship history for MSHA mine 1519857

Current hierarchy: **Straight Creek Holding Corporation → K-Island Resources, LLC → K-Island Mine #1**

- 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 → K-Island Mine #1; 2009-05-20 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Tackett Creek Mining, Inc. → K-Island Mine #1; 2019-03-13 to 2022-05-22; source msha-controller-operator-history
- **controller_controls_operator:** Timothy W  Evans Sr → Tackett Creek Mining, Inc.; 2019-03-13 to 2022-05-22; source msha-controller-operator-history
- **operator_operates_mine:** K-Island Resources, LLC → K-Island Mine #1; 2022-05-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Straight Creek Holding Corporation → K-Island Mine #1; 2022-05-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Straight Creek Holding Corporation → K-Island Resources, LLC; 2022-05-23 to current/open; source msha-controller-operator-history