# Relationship history for MSHA mine 3004191

Current hierarchy: **Allen L  Decker → AL Decker Stone LLC → Osterman Quarry**

- 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:** AL Decker Stone LLC → Osterman Quarry; 2026-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Allen L  Decker → Osterman Quarry; 2026-07-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Allen L  Decker → AL Decker Stone LLC; 2026-07-07 to current/open; source msha-controller-operator-history