# Relationship history for MSHA mine 2200849

Current hierarchy: **Kellie  Nelson; Christian  McQueen → River Road Sand and Gravel LLC → River Rd Sand & Gravel LLC - Forrest Co**

- 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

- **controller_controls_mine:** Christian  McQueen et al → River Rd Sand & Gravel LLC - Forrest Co; 2018-10-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** River Road Sand and Gravel LLC → River Rd Sand & Gravel LLC - Forrest Co; 2023-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Christian  McQueen et al → River Road Sand and Gravel LLC; 2023-10-10 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kellie  Nelson et al → River Road Sand and Gravel LLC; 2023-10-10 to current/open; source msha-controller-operator-history