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` J <br /> MATERIAL SAFETY DATA SHEET <br /> This Material Safety Data Sheet contains environmental, health and toxicology information for your employees. <br /> Please make sure this information is given to them. It also contains information to help you meet community right- <br /> to-know/emergency response reporting requirements under SARA Title III and many other laws. If you resell this <br /> product,this MSDS must be given to the buyer or the information incorporated in your MSDS. Discard any previous <br /> edition of this MSDS. <br /> This MSDS is formatted to provide you with useful hazard warnings and health evaluations and to facilitate your <br /> compliance with local,State and Federal regulations. <br /> SECTION I-IDENTITY: LIMESTONE <br /> Manufacturer's Name: Blue Mountain Minerals Emergency Telephone Number: 209-533-0127 <br /> Telephone Number for Information: 209-533-0127 <br /> Address: <br /> 24599 Marble Quarry Road <br /> Columbia,California 95310 <br /> Date Revised:July 16, 2001 <br /> SECTION II-HAZARDOUS INGREDIENTS/IDENTITY INFORMATION <br /> Product Chemical Name.Limestone(CAS Registry No.: 1317-65-3), chemical name can vary fxom limestone to <br /> dolomitic limestone. <br /> This product contains varying amounts of magnesium, causing it to be classified as <br /> either limestone(>90%calcium carbonate and< 10%magnesium carbonate)or <br /> dolomitic limestone(50 to 90%calcium carbonate and 10 to 50%magnesium <br /> carbonate). <br /> Specific Chemical Identity: Calcium,Magnesium Carbonate <br /> (Magnesium carbonate: CAS Registry No.: 546-93-0) <br /> (Calcium carbonate: CAS Registry No.: 1317-65-3) <br /> Hazardous Component: Although some limestones typically contain minor amounts(less than 1%)crystalline <br /> silica (Si02) (CAS Registry No.: 1408-60-7), laboratory sample analysis indicates <br /> this product contains less than detect levels of crystalline silica. <br /> EXPOSURE LIMITS FOR LIMESTONF,: <br /> ACGIH TLV(Threshold Limit Value)= 10 mg/m'total dust(MSHA; OSHA) <br /> 5 mg/m'Respirable dust(OSHA) <br /> EXPOSURE LIMITS FOR CRYSTALINE SILICA: <br /> Current American,Conference of Government Industrial Hygienist TLVs for Silica-crystalline are. <br /> Cristobalite (CAS 14464-46-1)—0.05 mg/m' <br /> Quartz: (CAS 14808-60-7)=0.1 mg/m' <br /> Tridymite(CAS 15468-32-3)=0.05 mghn' <br /> Limestone MSDS,rev. 1 Page 1 07/23/01 <br />