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• <br />Table 4. Thickener Underflow Analysis <br />Size +16 mesh 16 x 100 mesh -100 mesh Total <br />Weight 3.4 42.2 54.4 100 <br />Percent 13.1 17.88 37.34 29.2 <br />Ash <br />Btu/lb 12103 11860 8793 10069 <br />Percent 0.58 0.57 0.61 0.6 <br />sulphur <br />Table 5. Average Coarse Refuse Daily Production <br />• <br /> <br /> <br />Month Coarse <br />Refuse <br />(tons) <br />Days <br />Operating Daily <br />Average <br />(tons) <br />June 20,167 24 840 <br />July 11,041 12 920 <br />August 19,371 22 880 <br /> 50,579 58 860 <br />[dash plant modifications can be kept to a minimum by: <br />• Passing all jig rejects directly through the coarse <br />refuse crusher as opposed to screening prior to <br />crushing <br />• Pumping thickener underflow directly underground and <br />using the thickener underflow sump for coarse slurr}~ <br />preparation. <br />Transporting the dewatering equipment underground may pre- <br />sent some problems, as roof heights sometimes drop below 5 ft. <br />