# Relationship history for MSHA mine 2602682

Current hierarchy: **Fred  Quimby → LAQUIM MINING CONTRACTORS LLC → CRESCENT SILVER PEAK MINE**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-17T05:35:58.500035+00:00

## Valid-time edges

- **operator_operates_mine:** LAQUIM MINING CONTRACTORS LLC → CRESCENT SILVER PEAK MINE; 2008-02-29 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Fred  Quimby → CRESCENT SILVER PEAK MINE; 2008-02-29 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Fred  Quimby → LAQUIM MINING CONTRACTORS LLC; 2008-02-29 to current/open; source msha-controller-operator-history