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` r COMMERCIAL TESTING & ENGINEERING CO. <br /> GENERAL OFFICES: 228 NORTH LA SALLE STREET, CHICAGO, ILLINOIS 60601 • AREA CODE 312 728-8434 <br /> Reply to INSTRUMENTAL ANALYSIS DIVISION, 490 ORCHARD STREET, GOLDEN, COLORADO 80401, PHONE: 303.278.9521 <br /> To: Mr. Jack Gillespie <br /> C F & I Steel Corp. <br /> P.O. Box 316 Date: April 24, 1979 <br /> Pueblo, CO 81002 <br /> Analyst: J. Oldham <br /> P. O. No.: M25144 <br /> Sample No.: Purgatoi re R Below Max 10:55 4/19/79 IAD No.: 97-0543-032-07 <br /> CONCENTRATION IN ug/ml <br /> ELEMENT CONC. ELEMENT CONC. ELEMENT CONC. ELEMENT CONC. <br /> Uranium <0.006 Terbium Ruthenium Vanadium 0.03 <br /> Thorium <0.008 Gadolinium Molybdenum 0.005 Titanium 0.8 <br /> Bismuth Europium Niobium <0.005 Scandium 0.002 <br /> Lead 0.02 Samarium Zirconium 0.01 Calcium MC <br /> Thallium Neodymium Yttrium 0.003 Potassium MC <br /> Mercury -NR Praseodymium 0.001 Strontium 0.1 Chlorine 0.1 <br /> Gold Cerium 0.01 Rubidium 0.02 Sulfur 2 <br /> Platinum Lanthanum 0.009 Bromine 0.008 Phosphorus 0.2 <br /> Iridium Barium 0.4 Selenium Silicon MC <br /> Osmium Cesium 0.1 Arsenic <0.002 Aluminum >0.9 <br /> Rhenium Iodine 0.001 Germanium Magnesium 4 <br /> Tungsten Tellurium Gallium 0.003 Sodium >2 <br /> Tantalum Antimony -<0.002 Zinc 0.006 Fluorine =0.3 <br /> Hafnium Tin 0.004 Copper 0.01 Oxygen NR <br /> Lutecium Indium STD Nickel 0.004 Nitrogen NR <br /> Ytterbium Cadmium Cobalt <0.001 Carbon NR <br /> Thulium Silver Iron 5 Boron 0.002 <br /> Erbium Palladium Manganese 0. 1 Beryllium <br /> Holmium Rhodium Chromium 0.008 Lithium 0.003 <br /> Dysprosium Hydrogen NR <br /> STD — Internal Standard <br /> NR — Not Reported <br /> All elements not detected< 0.001 ug/ml Approved: <br /> MC — Major Component MC >10 'Jg/ml <br />