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r mum PRIMARY ROUTES OF ENTRY: CARCINOGEN LISTED IN: Inhalation: Can irritate respiratory tract; long-term NTP: Yes(Crystalline Silica)" exposure to respirable silica above the OEL may IARC Monograph: Yes(Crystalline Silica)" produce silicosis in susceptible persons. OSHA: No Ingestion: Possible, but very unlikely to occur in sufficient quantities. •Cost fly ash is not a listed carcinogen.Respirable crystalline silica from Shin and Eye Contact: Can d and irritate the skin; occupational sources is listed as carcinogenic to humans(Graoupl)by Y dry IARC. NTP lists silica,crystalline(respirable)as a compound that may is not absorbed by skin. Can irritate eyes. reasonably be anticipated to be a carcinogen. Presence of crystalline Hazardous: Is not considered hazardous. s►lica in respirable dust has not been established in this source. HEALTH HAZARDS: Acute: Fly ash may cause irritation to the respiratory tract, eyes, or the skin. Alkaline material; irritation may be aggravated by the addition of moisture(sweat). Chronic: Prolonged inhalation exposure may cause pulmonary fibrosis or chronic bronchitis. Signs and Symptoms of Exposure: Irritation of eyes, skin, and respiratory system. Medical Conditions Generally Aggravated by Exposure: May aggravate existing pulmonary condition if high dust situation is created. Dusting conditions should not occur under normal use. EMERGENCY FIRST AID PROCEDURES: Eye Contact: Flush for 15 minutes with water. Seek medical care as needed to remove particles and treat scratched comea. Skin Contact: Wash with mild soap and water. Inhalation: Remove to fresh air; seek medical attention if respiratory symptoms(coughing, chest tightness, shortness of breath) persist. Ingestion: Rinse mouth out with water. Induce vomiting if significant quantities are ingested. Respiratory Protection: If airborne dust exposure approaches the TLV or PEL(Section 1), use half-mask or full-face air purifying respirator equipped with NIOSH or MSHA-approved high efficiency filters for protection against pneumoconiosis-producing dust. An airline respirator may be required where dust levels are extremely high. Recommend use of a NIOSH or MSHA-approved mask or respirator for nuisance dusts whenever dust is created below TLV or PEL. Protective Gloves: Limit contact with skin. Use rubber or cloth gloves as necessary. Eye Protection: Wear goggles or face shield as appropriate. Avoid contact lenses. Ventilation to be Used: Keep dust levels below PEL. Use general and local exhaust ventilation and dust collection systems to keep dust levels within acceptable limits. Other Protective Clothing and Equipment: Protective clothing may be necessary under heavy dusting conditions. Hygienic Work Practices: Do not allow dust to get into eyes,to be inhaled,to be swallowed, or to remain on skin if irritation occurs. Minimize dusting. Practice good personal hygiene. Wash or shower after use. Launder clothes as normal. Steps to be Taken If Material Is Spilled or Released: Do not create unnecessary airborne dust.Avoid inhalation. Use water mist to reduce dust. Provide ventilation as appropriate. Use personal protection: respiratory, skin,and eyes. Waste Disposal Methods: Fly ash is not classified as a RCRA hazardous waste. Material can be disposed of as inert solid in a permitted landfill. Follow applicable federal, state, and local rules. Precautions to be Taken in Handling and Storage: Avoid dust inhalation. Use water and other available means to minimize dusting. Use personal protection. Follow good housekeeping and personal hygiene practices. Other Precautions and/or Special Hazards: Certain conditions(e.g.work in enclosed areas)could create over- exposure to trace elements.These activities should be evaluated for compliance with applicable standards. This MWS has been prepared in accordance with the Hazard Communication Rule 29 CFR 1810.1200. Information herein Is based on data considered to be accurate as of date prepared. No warranty, or representation,express or Implied,is made as to the accuracy or completeness of this data and safety information. No responslbAy can be assumed by vendor for any damage or injury resulting from abnormal use, failure to adhere to recommended practices, or from any hazards Inherent in the nature of the product Prepared by Headwaters Resources Corporate Office: 10653 S.River Front Parkway,Suite 300,South Jordan,UT 84095