# Relationship history for MSHA mine 4105883

Current hierarchy: **David  King → Pure Sand LLc → Lamesa**

- 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:** Pure Sand LLc → Lamesa; 2026-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** David  King → Lamesa; 2026-06-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** David  King → Pure Sand LLc; 2026-06-15 to current/open; source msha-controller-operator-history