Union Process has recently produced a hybrid laboratory mill with a vertical shaft adjustment that combines features of its HSA-1 and 1-S model attritors. The vertical shaft adjustment feature is designed to accommodate different sizes of grinding media. The drive system allows users to switch between the high speed HSA system with a side discharge and the conventional 1-S system with a bottom discharge. The HSA tank cover is a two-piece, stainless steel design with charging chute and vent. The 1-S tank cover is a one-piece nylon-coated stainless steel cover with charging port and brush seal for dust control. More info: Union Process, (330) 929-3333; Web: www.unionprocess.com.