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TR -18 to Permit M- 1977 -342 <br />Environmental Protection Plan <br />Aside from being combustible, #2 diesel is an aspiration hazard and a skin irritant. In the <br />environment, #2 diesel reacts similar to other petroleum fuels and can cause short-term damage <br />to terrestrial and aquatic ecosystems. <br />Syntex (or equivalent) is a non - hazardous particulate surfactant used in the mill circuit as a <br />frother /soap. Syntex is Sodium Lauryl Sulfate mixed with hot water. In humans, it may lead to <br />possible irritation of the gastrointestinal tract if ingested in quantity. It is stable and non- <br />hazardous in the environment. <br />Sodium Lauryl Sulfate (Witconate or equivalent) is a solid, flake -form, non - hazardous <br />particulate surfactant used in the mill circuit as a frother /soap. It is a frothing agent that is mixed <br />with hot water to form Syntex in the mill process. It is non - reactive, slightly flammable, and a <br />slight human health hazard. Eye protection and gloves should be worn when in contact with the <br />product. Decomposition products from burning are carbon monoxide and carbon dioxide. In the <br />environment, Witconate is stable and non - hazardous. <br />NP -9/9N9 or N95 Surfactant (or equivalent) is a nonylphenol polyethylene glycol ether used as a <br />nonionic surfactant in the lead leach circuit in the mill. This reagent is stable, and essentially is <br />non - hazardous to humans, but it can cause skin and eye irritation with prolonged contact. In the <br />environment, NP -9/9N9 or N95 may be toxic to aquatic organisms and has a tendency to <br />bioaccumulate. <br />Coherex is a petroleum hydrocarbon in water emulsion used widely in earth disturbing activities <br />to control dust and wind erosion. At the Henderson Mill, it is applied to exposed tailings to <br />control dust from the tailings storage facility. Coherex has a slight toxicity rating, and <br />insignificant ratings for fire and reactivity. It is biodegradable in water. Effects on human health <br />are similar to other common petroleum distillates such as diesel fuel. <br />5.3. Material Safety Data Sheets for Designated Chemicals <br />MSDSs for designated chemicals are available to employees and are included in Appendix C. <br />The MSDSs can be accessed by employees online should information be required for emergency <br />response procedures at the following link: https:// fcx.complyplus.com /default.asp. <br />Climax Molybdenum Company <br />Henderson Operations <br />October, 2012 <br />Page 11 of 40 <br />