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, roofing felt, and related products: starts pumps and adjusts valves to regulate flow of specified amount of slush pulp into vat. ) starts engines and adjusts beater rolls to obtain specified degree of pulp fineness and hydration. ) examines furnish for specified consistency and size of fibers. ) dips...
waste paper and cardboard are collected in a waste paper bank. the waste paper can be used to produce recycled paper. work with partners. . weigh out g ( oz.) of cardboard. tear the card into pieces the size of your thumbnail and put the pieces of card into a tall container. . use the measuring cylinder...
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half-tone screen a transparent material consisting of evenly spaced lines that is placed between a photograph and the film to be exposed. the number of lines to the inch controls the coarseness of the final dot formation; the more lines used, the higher the quality. the screen that is used depends on the paper...