# Relationship history for MSHA mine 2902364

Current hierarchy: **Harvest Holdings II LLC → Horizon Ag Products → Power Screener #1**

- 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

- **controller_controls_mine:** Brad  Knickel et al → Power Screener #1; 2005-03-14 to 2026-06-30; source msha-controller-operator-history
- **operator_operates_mine:** Horizon Ag Products → Power Screener #1; 2008-04-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Brad  Knickel et al → Horizon Ag Products; 2008-04-01 to 2026-06-30; source msha-controller-operator-history
- **controller_controls_operator:** Michael  Farmar et al → Horizon Ag Products; 2008-04-01 to 2026-06-30; source msha-controller-operator-history
- **controller_controls_mine:** Harvest Holdings II LLC → Power Screener #1; 2026-07-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Harvest Holdings II LLC → Horizon Ag Products; 2026-07-01 to current/open; source msha-controller-operator-history