# Relationship history for MSHA mine 4703001

Current hierarchy: **Georgia A  Pavin → Park View Sand & Gravel, LLC → Wash 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

- **controller_controls_mine:** Peter G Loppnow → Wash Plant; 1950-01-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Park View Sand & Gravel LLC → Wash Plant; 1993-11-01 to 2002-01-23; source msha-controller-operator-history
- **controller_controls_operator:** Peter G Loppnow → Park View Sand & Gravel LLC; 1993-11-01 to 2002-01-23; source msha-controller-operator-history
- **operator_operates_mine:** Park View Sand & Gravel, LLC → Wash Plant; 2002-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Georgia A  Pavin et al → Wash Plant; 2002-01-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Georgia A  Pavin et al → Park View Sand & Gravel, LLC; 2002-01-24 to current/open; source msha-controller-operator-history