# Relationship history for MSHA mine 2402443

Current hierarchy: **Donavan D  Truman → KOOTENAI SAND & GRAVEL, INC. → Wash Plant**

- 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:** Kootenai Sand & Gravel Inc → Wash Plant; 2006-04-15 to 2007-05-20; source msha-controller-operator-history
- **controller_controls_mine:** Donavan D  Truman et al → Wash Plant; 2006-04-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donavan D  Truman et al → Kootenai Sand & Gravel Inc; 2006-04-15 to 2007-05-20; source msha-controller-operator-history
- **operator_operates_mine:** Kootenai Aggregate → Wash Plant; 2007-05-21 to 2010-08-23; source msha-controller-operator-history
- **controller_controls_mine:** Donavan D  Truman et al → Wash Plant; 2007-05-21 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donavan D  Truman et al → Kootenai Aggregate; 2007-05-21 to 2010-08-23; source msha-controller-operator-history
- **operator_operates_mine:** KOOTENAI SAND & GRAVEL, INC. → Wash Plant; 2010-08-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Donavan D  Truman et al → KOOTENAI SAND & GRAVEL, INC.; 2010-08-24 to current/open; source msha-controller-operator-history