1. Two crushed ore streems are combined and screened in an industrial sieving machine as seen in the following figure. The feed of this screen consists of 35% ore A and %65 ore B. The screen aperture is 12 mm in this equipment and the total feed rate 200 t/h to the screen. The sieve analysis of the crushed materials are given in the Table below. o Calculate the required distributions and fill the following table. o Draw size distribution curves of ore A, B and mix into the following graph. Assuming the screen efficeincy as 100 %, calculate the oversize and undersize tonnages

Particle size (mm)	Ore A, 35%			Ore B, 65%			Mix
	gr			gr
-40+30	625			500
-30+20	1050			2175
-20+12	1600			1515
-12+5	750			2280
-5+3	625			1170
-3+1	500			3270
-1	1000			3890
Total