screen panels 14 as indicated above the screening deck 10 is one part of an overall screening apparatus in practice the deck 10 is supported on a frame and the entire apparatus is vibrated so that the screen deck 10 vibrates openings or apertures in the screen panels 14 allow certain sizes of screening material to fall through and others to remain on top of the deck ultimately the aim of the screening exercise might be to collect the screened material which passes through the panels 14 or the material which remains on top of the panels 14 or both the process is normally adopted in the mining industry either to separate or sift mined ore or to size or grade such ore fig1 shows several portions of the deck 10 that do not have panels installed those portions without panels are intended to illustrate the fixing members 13 that are applied to the edges 12 of the beams 11 shown in fig2 in addition those portions show how the screen panels 14 are connected along opposite edges to the fixing members 13 the screen panels 14 form a screening deck in which facing side edges of adjacent panels are in close facing relationship or most preferably are in abutting engagement by this latter arrangement the.