1. Introduction  
2. ALMA Data  
2.1. Observations  
2.2. Reduction  
2.3. Imaging  
2.4. Mosaic Sensitivity  
3. Results  
3.1. Source Extraction  
3.2. High-significance Continuum Detections  
4. Discussion  
4.1. Purity  
4.2. Flux Estimates  
4.3. Source Sizes  
5. Summary