# Relationship history for MSHA mine 3304466

Current hierarchy: **James E  Kilbarger → Kilbarger Construction Inc → KCI Sand and Gravel**

- 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:** Ed  Kilbarger et al → KCI Sand and Gravel; 1999-01-01 to 2024-10-31; source msha-controller-operator-history
- **operator_operates_mine:** Harden Agr Lime & Reclamation Service Inc → KCI Sand and Gravel; 2000-09-01 to 2006-04-09; source msha-controller-operator-history
- **controller_controls_mine:** Scott R  Harden → KCI Sand and Gravel; 2000-09-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Scott R  Harden → Harden Agr Lime & Reclamation Service Inc; 2000-09-01 to 2006-04-09; source msha-controller-operator-history
- **operator_operates_mine:** Kilbarger Construction Inc → KCI Sand and Gravel; 2006-04-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Ed  Kilbarger et al → Kilbarger Construction Inc; 2006-04-10 to 2024-10-31; source msha-controller-operator-history
- **controller_controls_operator:** Ann  Kilbarger et al → Kilbarger Construction Inc; 2006-04-10 to 2024-10-31; source msha-controller-operator-history
- **controller_controls_mine:** James E  Kilbarger → KCI Sand and Gravel; 2024-11-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James E  Kilbarger → Kilbarger Construction Inc; 2024-11-01 to current/open; source msha-controller-operator-history