Stationary and portable sand and aggregate processing plants, namely, machines for washing, crushing, pumping, scrubbing and screening aggregate and sand, recovery of fines, sand processing, polymer mixing; stationary and portable hydro sizing sand plants, namely, machines for cleaning and processing of sand, frac sand and industrial mineral sand; stationary and portable processing systems comprised of a crusher, conveyor, chassis, optional axle suspension, optional screen, optional feeder, and hydraulic, electrical and safety components, namely, hydraulic motors, electrical controls and circuit boxes, guardrails; stationary and portable dewatering systems comprised of dewatering screens, conveyors, mechanical discharging hopper, hydraulic pump, metal storage tank, safety rails, walkways and ladders, electrical controls, frames, platform and tower; stationary and portable dewatering systems comprised of hydrosizer, attrition cells, cyclones, separators, dewatering screens, conveyors, mechanical discharging hopper, hydraulic pump, metal storage tank, safety rails, walkways and ladders, electrical controls, frames, platform and tower; stationary and portable feed-hopper systems comprised of a belt feeder, conveyor, hopper, mixer, meter, frame and steel grate of bars; stationary and portable aggregate washing systems comprised of a wash hopper, conveyor, hydraulic pump, electric controls, frame, screens, screw washers; portable erect-on-site steel structures in the nature of machines for processing materials; polymer mixing systems comprised of a mechanical discharging hopper, earth auger, funnel, treatment chamber, mixer, metal storage tank, electrical control; stationary and portable fines recovery plant in the nature of a machine comprised of a dewatering screen, cyclone separator, hydraulic pump, earth auger, treatment chamber, metal storage tank, mechanical discharging hopper, frame and platform