January 2006 (PDF 2.9 MB) - Barrick Gold Corporation

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Material Safety Data Sheet Clear area of all unprotected personnel. Avoid breathing in dust. Work up wind or increase ventilation. Wear protective equipment to prevent skin and eye contact and breathing in vapours/dust. DO NOT allow material to get wet. Contain - prevent run off into drains and waterways. Spillage area and contaminated solids can be detoxified by treatment with an excess of dilute sodium hypochlorite, calcium hypochlorite, or ferrous sulfate after the addition of soda ash or lime to raise the pH to greater than 10.5. Allow 1 hour for complete decomposition before washing spillage area down with large quantities of water to ensure maximum dilution. Collect and seal in properly labelled containers or drums for disposal. If contamination of sewers or waterways has occurred advise local emergency services. 7. HANDLING AND STORAGE Handling advice: Avoid skin and eye contact and breathing in dust. Avoid handling which leads to dust formation. Storage advice: Store in a cool, dry, well ventilated place and out of direct sunlight. Keep dry - reacts with water. Protect from moisture. Store away from foodstuffs. Store away from incompatible materials described in Section 10. Keep containers closed when not in use - check regularly for spills. This material is a Scheduled Poison S7 and must be stored, maintained and used in accordance with the relevant regulations. 8. EXPOSURE CONTROLS/PERSONAL PROTECTION Occupational Exposure Limits: No value assigned for this specific material by the National Occupational Health and Safety Commission. However, Exposure Standard(s) for constituent(s): Cyanides (as CN): 8hr TWA = 5 mg/m3, Sk Decomposition product(s): Hydrogen cyanide: Peak Limitation = 11 mg/m3 (10 ppm), Sk As published by the National Occupational Health and Safety Commission. TWA - The time-weighted average airborne concentration over an eight-hour working day, for a five-day working week over an entire working life. `Sk' Notice – absorption through the skin may be a significant source of exposure. The exposure standard is invalidated if such contact should occur. Peak Limitation - a ceiling concentration which should not be exceeded over a measurement period which should be as short as possible but not exceeding 15 minutes. These Exposure Standards are guides to be used in the control of occupational health hazards. All atmospheric contamination should be kept to as low a level as is workable. These exposure standards should not be used as fine dividing lines between safe and dangerous concentrations of chemicals. They are not a measure of relative toxicity. Engineering Control Measures: Ensure ventilation is adequate and that air concentrations of components are controlled below quoted Exposure Product Name: SODIUM CYANIDE Substance No: 000031019701 Issued: 24/03/2005 Version: 2 Page 3 of 7
Material Safety Data Sheet Standards. Avoid generating and breathing in dusts. If inhalation risk exists: Use with local exhaust ventilation or while wearing air supplied mask. Keep containers closed when not in use. Personal Protective Equipment: Orica Personal Protection Guide No. 1, 1998: J - OVERALLS, RUBBER BOOTS, AIR MASK , GLOVES (Long), APRON. Wear overalls, full face shield, elbow-length impervious gloves, splash apron and rubber boots. Use with adequate ventilation. If inhalation risk exists, wear air-supplied mask meeting the requirements of AS/NZS 1715 and AS/NZS 1716. Always wash hands before smoking, eating, drinking or using the toilet. Wash contaminated clothing and other protective equipment before storage or re-use. 9. PHYSICAL AND CHEMICAL PROPERTIES Physical state: Solid Colour: White Odour: Faint 'Bitter almonds' Molecular Formula: NaCN Solubility: Soluble in water. Specific Gravity: 1.6-1.62 @20°C Relative Vapour Density (air=1): Not available Vapour Pressure (20 °C): Not available Flash Point (°C): Not applicable Flammability Limits (%): Not applicable Autoignition Temperature (°C): Not applicable Melting Point/Range (°C): ca. 560 pH: Not available 10. STABILITY AND REACTIVITY Stability: Incompatible with acids , moisture , metals , oxidising agents , and halogens . Hazardous polymerization will not occur. Reacts with water liberating toxic hydrogen cyanide gas. 11. TOXICOLOGICAL INFORMATION No adverse health effects expected if the product is handled in accordance with this Safety Data Sheet and the product label. Symptoms or effects that may arise if the product is mishandled and overexposure occurs are: Ingestion: Swallowing can result in nausea, vomiting, diarrhoea, abdominal pain, convulsions and loss of consciousness. Collapse and possible death may occur. Eye contact: May be an eye irritant. Exposure to the dust may cause discomfort due to particulate nature. May cause physical irritation to the eyes. Skin contact: Contact with skin may result in irritation. Can be absorbed through the skin. Effects can include those described for 'INGESTION'. Inhalation: Breathing in high concentrations may result in the same symptoms described for 'INGESTION'. High inhaled concentrations may lead to a feeling of suffocation and cause difficulty in breathing, headaches, dizziness and loss of consciousness. Can cause suffocation. Long Term Effects: Product Name: SODIUM CYANIDE Substance No: 000031019701 Issued: 24/03/2005 Version: 2 Page 4 of 7
Page 1 and 2: Cowal Gold Project Cyanide Manageme
Page 3 and 4: Cowal Gold Project - Cyanide Manage
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Page 45 and 46: OTHER GUIDELINES Cowal Gold Project
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January 2006 (PDF 2.9 MB) - Barrick Gold Corporation

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