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<br />Roof, Floor, and Coal Analysis <br />North end - No. 9 Mine <br />Parameter Roof Floor Coal <br />pH (units} 9.0 7.8 6.8 <br />EC mmhos/cm @ 25°C 0.8 0.6 0.5 <br />Saturation % 43 56 78 <br />Calcium (meg/1) 0.20 0.10 <0.05 <br />Magnesium (meg/1) 0.25 0.08 0.08 <br />Sodium (meg/1) 11.1 8.22 6.22 <br />SAR 23.6 27.4 24.4 <br />Sand % 16 <br />Silt % 43 <br />Clay % 41 <br />Combustible Solids % 10 57 82 <br />Pyritic Sulfur % 0.14 0.06 0.03 <br />Sulfate Sulfur % <0.01 <0.01 <0.01 <br />Organic Sulfur % <0.01 0.20 0.14 <br />Total Sulfur % 0.14 0.26 0.17 <br />CaC03 % (Neut. Pot.) 6.8 1.1 1.5 <br />Acid Base Potential 64 3 10 <br />Arsenic' 0.130 0.010 <0.010 <br />Boron2 0.6 1.1 2.0 <br />Iron' 33.0 5.40 3.80 <br />Lead' 2.40 0.10 <0.02 <br />Manganese' 6.40 0.16 0.18 <br />Mercury3 <0.01 <0.01 <0.01 <br />Molybdemum' <0.5 <0.5 <0.5 <br />Selenium' 0.130 0.010 0.010 <br />Zinc' 2.30 0.128 0.120 <br />N-N032 0.35 0.25 0.40 <br />Concentrations expressed as ppm unless otherwise noted. <br />No particle size analysis due to coal in sample. <br />1) AB-DTPA Extraction <br />2) Hot Water Extraction <br />3) Acid Extraction <br />