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Cross Gold Mine <br />December 2024 U-9 <br /> <br /> <br />9. Designated Chemicals and Materials Handling <br />The MCP located in Appendix U-1 addresses the handling and storage of specific chemicals on site. <br />This subsection pertains specifically to the designated chemicals stored on site. Fuel is not a <br />designated chemical. <br />All chemical storage will be inspected daily during operations. During any temporary shutdown, <br />reagents used in the water treatment facility will be kept onsite as needed. <br />All froth flotations reagents will be dosed into the milling process within the mill building. Reagent <br />dosing may be by hand delivery or by electronic control and pump. Mixing and preparing of reagents <br />will take place within the reagent storage area within the mill building. No flotation reagent mixing will <br />take place outside the mill building. No flotation reagent dosing will take place outside of the mill <br />building. <br /> <br />MetSorb HMRG is an adsorbent material used in the water treatment facility as a polisher. <br />MetSorb HMRG should be stored in a dry, cool, well-ventilated place. Store in the original container <br />away from moisture. <br />MetSorb HMRG is considered to be stable and non-reactive. It is a dry, white powder or granules with <br />no odor. <br />MetSorb HMRG can cause eye damage, skin irritation, and respiratory irritation. <br />MetSorb HMRG is used to adsorb heavy metals from mine water during filtration. <br /> <br />All flotation reagents will be detailed in the mill revision that will be provided once final designs for the <br />mill and milling process are selected by the operator. <br /> <br />A list of designated chemicals and the maximum quantities to be stored on the site at any given time <br />can be seen in Table U-2. MetSorb HMRG comes in 72-gallon drums. <br />All chemicals will be delivered to Cross Gold Mine via a licensed contractor. Chemicals will be unloaded <br />directly into their standard storage CONEX at the mine. <br />Table U-2. Maximum Designated Chemical Storage <br />Reagent Purpose Quantity Volume <br />MetSorb HMRG Adsorption 2000 lbs. 72 gals <br />