A list of documents by USSC, presented on website, which users search most often: 1600G, Irondale USG890, APS1100B, 1537M.
Irondale USG890, 21
Wondercoal 2827, 10
Golden eagle 5520, 56
1537M, 28
APS1100B, 16
American Harvest 6041, 32
American Harvest 6041, 29