# Relationship history for MSHA mine 4703244

Current hierarchy: **Justin M  Peterson; Brandon  Peterson → Peterson Brothers 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

- **operator_operates_mine:** Peterson Brothers Sand & Gravel LLC → Wash Plant; 2000-05-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Grant G Peterson et al → Wash Plant; 2000-05-01 to 2023-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Grant G Peterson et al → Peterson Brothers Sand & Gravel LLC; 2000-05-01 to 2023-12-31; source msha-controller-operator-history
- **controller_controls_operator:** Max C Peterson et al → Peterson Brothers Sand & Gravel LLC; 2000-05-01 to 2023-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Brandon  Peterson et al → Wash Plant; 2024-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brandon  Peterson et al → Peterson Brothers Sand & Gravel LLC; 2024-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Justin M  Peterson et al → Peterson Brothers Sand & Gravel LLC; 2024-01-01 to current/open; source msha-controller-operator-history