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~- <br />4.2 New Findings or Developments <br />There were no new findings or developments in 2006. <br />4.3 2006 Operation Results <br />Mining and production activities were continuous in 2006. The following table provides a <br />summary of mining and process results: <br />Table 4.1-Mine and Process Data <br />2006 <br /> <br />Month <br />Avg. <br />GPM Recovery <br />Temp. <br />Plant Assay <br />Bicarb Assay <br /> <br />NaCI Tons <br />Cavity <br />#lA Tons <br />Cavity <br />#SH Tons <br />Cavity <br />#6H Monthly <br />Total <br />Tons <br />Janu -06 746 190 179 77 1,155 1,280 6,455 8891 <br />Febru -06 680 189 182 71 892 1,091 5,154 7138 <br />Mazch-06 778 188 183 66 999 1,465 6,220 8684 <br />A ril-06 800 188 ]83 64 746 1,224 4,852 6822 <br />Ma -06 650 187 182 62 835 1,427 5,539 7801 <br />June-06 715 186 182 61 986 1,759 6,542 9256 <br />Jul -06 890 185 181 61 993 1,455 6,163 6231 <br />Au st-06 628 194 191 62 773 1,545 5,512 7830 <br />Se tember-06 491 197 196 67 592 1,889 5,416 7898 <br />October-06 669 197 192 69 573 1,910 5,395 7878 <br />November-06 813 198 189 66 943 2,133 7,123 10200 <br />December-06 806 193 186 67 932 2,119 7,062 10112 <br />AVERAGE 697 191 185 66 866 1608 5953 8228 <br />TOTAL 10388 19297 71436 98739 <br />Key [o above headings: <br />Ave. GPM -monthly average injection flow rate during process operations. <br />Temp. - Temperature in degrees F recovered at the pregnant liquor tank. <br />Assay - g/l sodium chloride or sodium bicarbonate m the composite recovery liquor as total bicarbonate. (Total bicazbonate = <br />bicarbonate Bfl + 1.58 x carbonate g/1). <br />Tons - total monthly bicarbonate production without adjusunents per cavity. <br />Figure 4-2 illustrates the 2006 pregnant liquor results and Figure 4-3 represents monthly <br />production for 2006. Production and processing were performed for twelve months of the year. <br />Good brine grade and temperatures were noted throughout the yeaz. The balance between <br />injection and recovery rates for cavities lA, SH, and 6H has been continuously monitored using <br />fluid level indicators (pressure transmitters) installed in existing Dissolution Surface aquifer <br />monitoring wells located neaz the active cavities. <br />2007 Annual Report 6 of 18 <br />