# Relationship history for MSHA mine 4003234

Current hierarchy: **Keith R  Radford; Kenneth R  Radford → K R Trucking LLC → Weakley County Pits**

- 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:** K R Trucking LLC → Weakley County Pits; 2004-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Kenneth R  Radford et al → Weakley County Pits; 2004-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Kenneth R  Radford et al → K R Trucking LLC; 2004-06-24 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Keith R  Radford et al → K R Trucking LLC; 2004-06-24 to current/open; source msha-controller-operator-history