# Relationship history for MSHA mine 0203362

Current hierarchy: **Thomas  Short; Linda  Short → Desert Construction, Inc. → Truxton Wash Pit**

- 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:** Linda  Short  et al → Truxton Wash Pit; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Desert Construction, Inc. → Truxton Wash Pit; 2016-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Linda  Short  et al → Desert Construction, Inc.; 2016-05-04 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Thomas  Short  et al → Desert Construction, Inc.; 2016-05-04 to current/open; source msha-controller-operator-history