# Relationship history for MSHA mine 4202095

Current hierarchy: **Bill W  Stoddard → C W Mining Company (Co-Op Mine) → Bear Canyon #2**

- 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

- **controller_controls_mine:** Bill W  Stoddard et al → Bear Canyon #2; 1980-09-01 to current/open; source msha-controller-operator-history
- **operator_operates_mine:** C W Mining Company (Co-Op Mine) → Bear Canyon #2; 1994-02-01 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Bill W  Stoddard et al → C W Mining Company (Co-Op Mine); 1994-02-01 to current/open; source msha-controller-operator-history