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Hazardous Ingredients

IDENTITY INFORMATION Ingredient: CAS No.: OSHA PEL: ACGIH TLV: Silica, as quartz 14808-60-7 mg/m3 10/ (%SiO2+2) 0.1 Exposure limits are for respirable fraction Crystalline free silica, in the form of quartz, is present in these sands at a maximum level of 3% by weight. The proportion of the silica that is in the respirable size range (<10 µm particle size) varies and is always less then 0.015 percent of the total sand by weight. NIOSH recommends a Permissible Exposure Limit (PEL) of 0.5 mg/m3 for respirable free silica. SECTION III - PHYSICAL / CHEMICAL CHARACTERISTICS PHYSICAL STATE: Solid

Appearance/Odor

Natural sand or rock particles (maximum size ½ inch ), no distinctive odor VAPOR PRESSURE: N/A VAPOR DENSITY: N/A EVAPORATION RATE: N/A BOILING POINT: N/A FREEZING POINT: N/A pH in WATER: Insoluble in water SPECIFIC GRAVITY: 2.65 Coef. Water/Oil Dist. N/A SECTION IV - FIRE AND EXPLOSION HAZARD DATA FLAMMABILITY: Non flammable MEANS OF EXTINCTION: Non-combustible. May be FLASH POINT: N/A used to extinguish fires. Upper / lower Flam. Limit: N/A Hazardous Combustion Products: None AUTOIGNITION TEMP.: N/A EXPLOSION DATA Sensitivity to Impact: None Sensitivity to Static Discharge: None SECTION V - REACTIVITY DATA CHEMICAL STABILITY: Stable INCOMPATIBILITY WITH OTHER SUBSTANCES: CIF3, MnF3, OF2 HAZARDOUS POLYMERIZATION: Will not occur HAZARDOUS DECOMPOSITION PRODUCTS: None SECTION VI - HEALTH HAZARD DATA The portion of each product that can be classified as respirable crystalline silica is described in the following section. The remainder of the material is not classified as a health hazard. Symptoms of overexposure to crystalline silica Inhaled: Shortness of breath, coughing, reduced pulmonary function. Excessive inhalation of crystalline silica dust will result in respiratory disease, including silicosis, pneumoconiosis and pulmonary fibrosis. Contact with eyes or skin: Eye irritation Ingestion: May cause gastrointestinal discomfort. Suspected cancer agent? Yes - respirable crystalline silica portion only. Federal OSHA No NTP Yes. Respirable Crystalline silica has been listed in the 6th Annual Report on Carcinogens. IARC Yes. Monographs on the Evaluation of the Carcinogenic Risk of Chemicals to Humans (Vol 68, 1997) concludes that there is sufficient evidence in humans for the carcinogenicity of inhaled crystalline silica in the forms of quartz and cristobalite (Group 1) in certain industrial circumstances, but that carcinogenicity may be dependent on inherent characteristics of the crystalline silica or external factors affecting its biological activity or distribution if its polymorphs.

Medical Conditions Generally Aggravated by Exposure

Individuals with pulmonary or respiratory disease should avoid exposure to dust. First Aid Procedures See section IX SECTION VII - PRECAUTIONS FOR SAFE HANDLING AND USE Personal Protective Equipment: Where the creation of dust is unavoidable, use conventional NIOSH approved or equivalent respiratory protection equipment based on considerations of airborne concentration and duration of exposure Gloves: Impervious to moisture Eye: Use appropriate eye protection to minimize contact with dust from dry product, or with wet product after mixing with water. Other: Wear appropriate clothing and footwear for the specific application. Clean clothing which has become dusty. SECTION VIII - CONTROL MEASURES Engineering Controls: Use adequate ventilation. Do not permit dust to accumulate in work area. Leak and Spill Procedure: If uncontaminated, collect for reuse or disposal. Use dustless procedures. If contaminated, use appropriate method and container for contaminant. SECTION VIII - continued Waste Disposal: If uncontaminated, dispose as a non-metallic mineral. If contaminated, use appropriate method for contaminant in accordance with applicable regulation(s). Handling Procedures and Equipment: Avoid creation of respirable dust if possible. Use adequate ventilation and dust collection. Avoid contact with wet product during use.

Storage

Requirements Store in a dry place. Special Shipping Information: Protect from moisture.