# Relationship history for MSHA mine 3004146

Current hierarchy: **William A.  Eklund; William D.  Eklund; James  Eklund → EKLUND FARM MACHINERY INC → EKLUND GRAVEL BANK #2**

- 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:** Eklund Farm Machinery Inc → EKLUND GRAVEL BANK #2; 2025-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** William A.  Eklund et al → EKLUND GRAVEL BANK #2; 2025-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William A.  Eklund et al → Eklund Farm Machinery Inc; 2025-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** William D.  Eklund et al → Eklund Farm Machinery Inc; 2025-03-25 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** James  Eklund et al → Eklund Farm Machinery Inc; 2025-03-25 to current/open; source msha-controller-operator-history