# Relationship history for MSHA mine 2003298

Current hierarchy: **Larry A  Harris → Harris Contracting → Screen Machine II**

- 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:** Harris Contracting → Screen Machine II; 2004-07-12 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Larry A  Harris → Screen Machine II; 2004-07-12 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Larry A  Harris → Harris Contracting; 2004-07-12 to current/open; source msha-controller-operator-history