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realise that HSC 25143.10 parameters also would have to be met, and this area has now <br /> been addressed. <br /> 7.0 Use of Ferrous Sulfate Crystals <br /> 7.1.1 SWPC operates an acid recovery system that receives pickle acid from the pickling <br /> operation. and processes it to remove a percentage of the iron from the acid in the form of <br /> ferrous sulfate heptahydrate crystals, and then returns the acid to the pickling <br /> operation for reuse. The acid recovery system is a closed loop system, with the ferrous <br /> sulfate crystals generated as a by-product. <br /> SWPC do not further treat the ferrous sulfate. <br /> 7.1.2 Section 25143.2(d) (7), HSC excludes the ferrous sulfate crystals from being a <br /> waste, as the material is used commercially as a safe and effective chemical for the <br /> Complexing of Cyanide in Gold Milling Operations [see Appx 6] <br /> 7.1.3 The operator that handles the sale, management and end-use of the ferrous sulfate <br /> crystals is : <br /> Crown Technology Inc, <br /> 7513 E. 96th St, <br /> PO Box 50476, Indianapolis, IN 46250-0426 Ph : (317) 845-0045 <br /> 7.1.4 SWPC have an annual contract with Crown Technology to "sell and convey onto <br /> the Buyers [Crown] trucks the following described chemical commodity <br /> Ferrous Sulfate Heptahydrate <br /> [produced from Acid Recovery] <br /> [Moist Form] <br /> FeSO4-7H2O = 98% min <br /> Bulk density = 70 / 75 lbs/ft' <br /> Moisture = 0 /4% <br /> Shipments of ferrous sulfate are shipped directly out of state to Nevada on trucks supplied <br /> by Crown Technology. <br /> Please do not hesitate to call me if you require any more information. If I do not have it to <br /> hand, I will certainly get it for you. <br /> Yours sincerely, <br /> Neil Hanlan, Senior Engineer <br /> Sumiden Wire Products Corporation <br /> E\nhan1an\genera1\dtsc2 <br />