# Relationship history for MSHA mine 2003378

Current hierarchy: **Brian L  Pitt; Wayne Harold  Toby; Salvatore  Pansera → Belle Valley Supply LLC → Belle Valley Supply Portable 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: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **controller_controls_mine:** Wayne Harold  Toby  et al → Belle Valley Supply Portable Plant; 2004-01-04 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** Belle Valley Supply LLC → Belle Valley Supply Portable Plant; 2007-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Wayne Harold  Toby  et al → Belle Valley Supply LLC; 2007-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Salvatore  Pansera  et al → Belle Valley Supply LLC; 2007-03-30 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brian L  Pitt  et al → Belle Valley Supply LLC; 2007-03-30 to current/open; source msha-controller-operator-history