Aggregate washing systems, methods and apparatus

An aggregate washing system, comprising:

• a slurry mixer, said slurry mixer comprising:
• a tank disposed at a first incline angle, the tank having an aggregate material inlet for receiving aggregate material, the tank having a tank outlet;
• a water inlet for supplying water to said tank;
• a propulsion assembly rotatably supported at least partially within said tank, wherein rotation of said propulsion assembly agitates said water and said aggregate material to form a slurry, wherein rotation of said propulsion assembly conveys said slurry toward said tank outlet, wherein said tank retains substantially all water that does not exit said tank outlet;
• a dewatering mechanism disposed to receive said slurry from said tank outlet of said slurry mixer, said dewatering mechanism comprising:
• a vibrating screen having a screen media deck for separating oversize material in said slurry from water and undersize material in said slurry, the screen media deck having a plurality of openings for receiving water and undersize material, the screen media deck having an end over which oversize material is deposited;
• and
• at least a first washing element disposed to direct water toward said screen media deck.