# Relationship history for MSHA mine 0202963

Current hierarchy: **John P  Allison; Douglas  Baker → Western Metallurgical Company LLC → Western Crow**

- 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:** Western Metallurgical Company LLC → Western Crow; 2002-01-23 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Douglas  Baker  et al → Western Crow; 2002-01-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Douglas  Baker  et al → Western Metallurgical Company LLC; 2002-01-23 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** John P  Allison  et al → Western Metallurgical Company LLC; 2002-01-23 to current/open; source msha-controller-operator-history