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U.S. STANDARD SIEVE NUMBERS <br /> 100 100 70 50 40 30 20 16 8 5 <br /> 90 <br /> SO <br /> o � i <br /> W - <br /> a 70 -- <br /> Lu <br /> s <br /> Z 60 <br /> Lu7-1U <br /> Lu <br /> W <br /> i <br /> H <br /> j 40 <br /> v 30 -� <br /> i <br /> i <br /> 20 <br /> 10 <br /> 0 <br /> 0 10 20 30 40 50 60 70 80 40 100 110 120 130 1N. <br /> 0.5 1.0 1.5 2.0 2.5 3.0 MM. <br /> SLOT OPENING AND GRAIN SIZE IN THOUSANDTHS OF AN INCH AND MM. <br /> RMC LONESTAR <br /> SIEVE ANALYSIS <br /> LAPIS #1c SAND PACK <br /> FIGURE #3 <br />