Strickman, The impact sluice is not like a Miller table. This is a combination sluice box-concentrating table. The sluice moves with and against the current. The sluice has two settings. One works the gold to a side trough where it can be vacuumed off wihout shutting down. Jim Humble who worked for action mining used to sell them. Jimmygoat
Strickman, I have an add from the Cal. Mining Journal May 1998 that has a picture and advertisement for one. It is not a very good picture. I cannot scan from my house, but will try from another location and see if I can't get it posted. I located one in Wash., but want to make sure it is worth it.