The crushed stone output from a 47 × 34-in. jaw crusher, with a closed opening of 2.5 in., is passed over vibrating screens in a deck, one with 2.5-in. openings and one with 1.5-in. openings. The sorted stone is placed into 3 piles. The permissible screen efficiency is 90%. The stone has a unit weight of 102 lb/cf when crushed. A).