# Relationship history for MSHA mine 1519739

Current hierarchy: **Ocie A  May; Robert K  Williams → Wilmay Land Holdings, LLC. → Kings Creek**

- 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

- **operator_operates_mine:** Wilmay Land Holdings, LLC. → Kings Creek; 2014-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Robert K  Williams et al → Kings Creek; 2014-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Robert K  Williams et al → Wilmay Land Holdings, LLC.; 2014-02-19 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ocie A  May et al → Wilmay Land Holdings, LLC.; 2014-02-19 to current/open; source msha-controller-operator-history