High efficiency vibratory separators, available in size from 24'' to a large one 72''in diameter. Creative design features maximize screen utilization, efficiently handle widely varying feed rates and consistencies, increase throughput, and prevent blinding.  One to multilevel screen surfaces yielding desired numbers of predetermined fractions with accurate separations in various mesh sizes. The equipment also can be supplied with dust cover and other special auxiliaries. Material of construction will be choice of customer and largely with depend on the application.