Stamp mills, first used during the Renaissance in such diverse industries as paper making, oil-seed processing, and ore refining, work to crush their material by repeatedly dropping heavy weights on them?
Question 2: Mechanical pulping does not remove the ________, so the yield is very high, >95%, but also causes paper made from this pulp to yellow and become brittle over time.
Question 5: To write or print on: the piece of paper becomes a document; this may be for keeping a record (or in the case of printing from a computer or copying from another paper: an additional record) and for ________; see also reading.
Question 10: It is produced by pressing together moist fibers, typically ________ pulp derived from wood, rags or grasses, and drying them into flexible sheets.