# Relationship history for MSHA mine 2302363

Current hierarchy: **James Keith  Patterson; Rebecca  VanWinkle → Delaware Stone → Delaware**

- 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:** Delaware Stone → Delaware; 2007-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** James Keith  Patterson  et al → Delaware; 2007-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James Keith  Patterson  et al → Delaware Stone; 2007-05-17 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Rebecca  VanWinkle  et al → Delaware Stone; 2007-05-17 to current/open; source msha-controller-operator-history