# Relationship history for MSHA mine 2302313

Current hierarchy: **Loyd R.  Cook → Missouri Sand Gallatin LLC → Missouri Sand Gallatin LLC**

- 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

- **operator_operates_mine:** Missouri Sand and Gravel → Missouri Sand Gallatin LLC; 2005-05-15 to 2017-04-06; source msha-controller-operator-history
- **controller_controls_mine:** Louis L  Cook → Missouri Sand Gallatin LLC; 2005-05-15 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Louis L  Cook → Missouri Sand and Gravel; 2005-05-15 to 2017-04-06; source msha-controller-operator-history
- **operator_operates_mine:** Missouri Sand Gallatin LLC → Missouri Sand Gallatin LLC; 2017-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Loyd R.  Cook → Missouri Sand Gallatin LLC; 2017-04-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Loyd R.  Cook → Missouri Sand Gallatin LLC; 2017-04-07 to current/open; source msha-controller-operator-history