Paper pulp, cellulose and non-wood fiber, paper, paper board and tissue producing and treatment systems composed primarily of the following machines-- screening machines, classifiers and washing machines for chips and wood flakes; tanks and containers used as part of the manufacturing process for storage, pre-treatment, cooking and bleaching of pulp; reactor tanks and containers used as part of the manufacturing process; knotting and screening devices namely atmospheric, pressure and incline, hydro cyclone cleaners; filtering devices and filters namely vacuum, pressure, extraction and disc filters, screens, presses; mixing units; machines for production of recycled fiber and for de-inking recycled paper, namely atmospheric and pressurized flotation cells, clarifiers; machines and apparatus for stock preparation, namely, pulpers, approach screens, cleaners, de-aerators, agitators, refiners and refiner plates, deflakers; machines for the production of paper, paperboard and tissue, namely head boxes, fourdriners, top wires, starch applicators, presses, dryers, calendars, reels and winders, rolls and roll covers; centrifugal pumps and replacement parts for the foregoing; paper pulp processing equipment for environmental and industrial use, namely vacuum pressure, gravity and drip filtration systems for processing chemicals and minerals and for separating liquids from solids composed primarily of centrifuges, classifiers, agitators, flotation machines, thickeners, clarifiers, settlers, filters, presses, thermal processors, rotary kilns, fluid beds, dryers, coolers, slurry pumps; screening units, screens, shake outs, cyclones, separators, vacuum and pressure filters, machines for the reduction of effluents and other discharge, thickeners, clarifiers and floatation cells; and replacement parts for the foregoing; Machines for extracting ore from mines, namely extractors and cages used for the transportation of both ore and people out of mines

Machinery and equipment for processing municipal liquid wastes and sedimentation, namely, classifiers, agitators, thickeners, clarifiers, thermal processors, fluid beds, dryers, coolers, slurry pumps; screening units, screens, degritting units and digesters; replacement parts for the foregoing

Installation and erection and modification of heavy and semi-heavy industrial machines, water purification systems and sewage treatment systems for use in the pulp and paper, mining and municipal industry; maintenance of pulp manufacturing machines for use in the pulp and paper, mining and environmental and municipal industries

Engineering services related to the manufacturer and maintenance, and servicing of pulp and paper, mining, environmental and municipal equipment; design of heavy and semi-heavy industrial equipment