# Relationship history for MSHA mine 5002111

Current hierarchy: **Shannon L Price → Alaska Technical Services LLC dba ATS Construction → Portable Unit**

- 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:** ATS Construction → Portable Unit; 2024-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Shannon L Price → Portable Unit; 2024-07-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Shannon L Price → ATS Construction; 2024-07-20 to current/open; source msha-controller-operator-history