# Relationship history for MSHA mine 0505202

Current hierarchy: **Kelly D Kelley; John E Kelley → Kelley Trucking Inc. → Sand Creek Farm**

- 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:** Kelley Trucking Inc. → Sand Creek Farm; 2025-02-28 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** John E Kelley et al → Sand Creek Farm; 2025-02-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John E Kelley et al → Kelley Trucking Inc.; 2025-02-28 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kelly D Kelley et al → Kelley Trucking Inc.; 2025-02-28 to current/open; source msha-controller-operator-history