Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 576
btained, as already mentioned, ite, or compact, such as the true limestones and most marbles and granites. The more by means of another 100,000-lbs. gauge or less disk-shaped pieces, c and d, are de- near the pump, so that a test between these tached from the sides of the cube with a two gauges… … him to estimate the friction at 10 per cent. I. Hicks, civil engineer, of Bolton, England, is generally found crushed and ground to found, by very careful and long-continued powder by the attrition of the larger frag- trials, made regardless of expense, that the ments. Of course this general…
Engineering
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