# Relationship history for MSHA mine 4404046

Current hierarchy: **Salem Stone Corporation → CW Barger Operations, LLC → CW Barger Operations,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: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Charles W Barger & Son Construction Co Inc → CW Barger Operations,LLC; 1950-01-01 to 2025-12-31; source msha-controller-operator-history
- **controller_controls_mine:** Charles W  Barger III → CW Barger Operations,LLC; 1950-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Charles W  Barger III → Charles W Barger & Son Construction Co Inc; 1950-01-01 to 2025-12-31; source msha-controller-operator-history
- **operator_operates_mine:** CW Barger Operations, LLC → CW Barger Operations,LLC; 2026-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Salem Stone Corporation → CW Barger Operations,LLC; 2026-01-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Salem Stone Corporation → CW Barger Operations, LLC; 2026-01-01 to current/open; source msha-controller-operator-history