# Relationship history for MSHA mine 4300675

Current hierarchy: **Donald E  Peters Sr → Peters Excavating & Transport Inc → Portable Screen Plant**

- 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:** Peters Excavating & Transport Inc → Portable Screen Plant; 2007-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Donald E  Peters Sr et al → Portable Screen Plant; 2007-08-06 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donald E  Peters Sr et al → Peters Excavating & Transport Inc; 2007-08-06 to current/open; source msha-controller-operator-history