# Relationship history for MSHA mine 3004068

Current hierarchy: **Troy A  Donnelly → T & C MOBILE HOME & CONSTRUCTION SERVICES LLC → POWER SCREEN TRAKPACTOR 320SR**

- 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:** Troy A  Donnelly → POWER SCREEN TRAKPACTOR 320SR; 2013-03-06 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** T & C Mobile Home & Construction Services LLC → POWER SCREEN TRAKPACTOR 320SR; 2021-02-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Troy A  Donnelly → T & C Mobile Home & Construction Services LLC; 2021-02-23 to current/open; source msha-controller-operator-history