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Attachment B,_ Technical Revision to the May Day Mine Permit, September 12, 2009. 17 of 35 <br />.Ctao® aso X-*v , USOS: 0000290 Date: 10/22l2004 Page 2 or 8 <br />SELF-HEATING MATERIAL <br />MAY, BE SPONTANEOUSLY COMBUSTIBLE <br />MAY FORM EXPLOSIVE DUST-AIR MIXTURES <br />HARMFUL. IF ABSORBED THROUGH SKIN <br />DUST IRRITATING <br />CAUSES EYE AND SKIN IRRITATION <br />POTENTIAL HEALTH EFFECTS <br />I <br />EFFECTS OF EXPOSURE: <br />The estimated acute oral (rat) LD50 and acute dermal (rabbit) LD50 values are > 1,000 mglkg and > 500 <br />mgtkg, respectively, based on similar materials. Skin or eye contact with solutions of this product may cause <br />moderate skin and eye irritation. Airborne dust may cause significant eye, skin or respiratory tract Irritation. <br />Refer to Section 11 for toxicology information on the regulated components of this product. <br />4. FIRST AID MEASURES <br />Ingestion: i <br />If swallowed, calf a physician immediately. Only induce vomiting at the Instruction of a physician. Never give anything <br />by mouth to an unconscious person. . <br />Skin Contact: 11 <br />Remove contaminated clothing and shoes without delay. Wash immediately with plenty of water. Do not reuse <br />contaminated clothingjwithout laundering. Get medical attention if pain or irritation persists after washing or if signs <br />and symptoms of overexposure appear. <br />Eye Contact: <br />Rinse immediately with plenty of water for at least 15 minutes. Obtain medical advice If there are persistent <br />symptoms. <br />Inhalation: 11 <br />Remove to fresh air. If, breathing is difficult, give oxygen. Obtain medical advice If there are persistent symptoms. <br />5. FIRE-FIGHTING MEASURES <br />Extinguishing Media: <br />Use carbon dioxide, dry chemical or large quantities of water. <br />Protective Equipment: <br />Firefighters, and others exposed, wear self-contained breathing apparatus. Wear full firefighting protective clothing. <br />Special Hazards: <br />Solid xanthates are stable when kept cool and dry. Exposure to heat and moisture can cause decomposition to <br />flammable and explosive vapor of carbon d1sulfrde. Since xanthates decompose in solution, even at room <br />temperature, fire and explosion hazards can develop with aging. <br />6. ACCIDENTAL RELEASE MEASURES <br />Personal Precautions: <br />Where exposure level('is not known, wear approved, positive pressure. self-contained respirator. Where exposure <br />level is known, wear approved respirator suitable for level of exposure. Refer to Section S (Exposure <br />Controls/Personal Protection) for appropriate personal protective equipment.