# Relationship history for MSHA mine 4801728

Current hierarchy: **James S  Campbell; Joe  Campbell → Star Trucking → Crusher #81**

- 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:** Star Trucking → Crusher #81; 2008-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James S  Campbell et al → Crusher #81; 2008-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James S  Campbell et al → Star Trucking; 2008-05-05 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Joe  Campbell et al → Star Trucking; 2008-05-05 to current/open; source msha-controller-operator-history