# Relationship history for MSHA mine 2103484

Current hierarchy: **Kevin R  Paul → 4 J's Gravel Crushing → 4 J's Gravel Crushing**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-18T09:31:49.615908+00:00

## Valid-time edges

- **operator_operates_mine:** 4 J's Gravel Crushing → 4 J's Gravel Crushing; 2005-04-20 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kevin R  Paul → 4 J's Gravel Crushing; 2005-04-20 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kevin R  Paul → 4 J's Gravel Crushing; 2005-04-20 to current/open; source msha-controller-operator-history