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<br />• <br />• <br />4.3 New Findings or Developments <br />Use of the small radius horizontal technology has been demonstrated successfully. <br />Contact was made with both cavities 3A and 4A using this method of horizontal drilling. <br />Injection for cavity 3A was transferred to 4A-6V when brine grade fell off at the recovery <br />well. <br />_\ `;. <br />'~ , `t~~. <br />~~ `~.. <br />~~ ~~ <br />4.3.1 2000 Operation Results <br />A Summary of mining and process results follows: <br />Month Ave. GPM Recovery Assay Assay Tons Tons Tons Total <br /> Temp. Biwrb gll NaCI gll Cavity 1A Cavity 3A Cavity 4A Tons <br /> Ptant <br />January 794 186 209 23.8 5358 3284 0 8642 <br />February 773 184 205 22.6 5376.5 2194.2 31 7601.7 <br />March 919 173 179 27.9 6019 1301.5 740.5 8061 <br />April 767 177 193 26.5 5314.5 1997.4 358.1 7670 <br />May 726 179 204 23 4849.8 2829.2 0 7679 <br />June 821 173 197 23.8 5662.1 2789.6 594.8 9046.5 <br />July 841 172 196 23.5 5505 2154.5 1835.5 9495 <br />August 788 174 199 23.2 4675.4 1700.2 1278.4 7654 <br />September 815 172 192 23 5409 2179.5 1208.5 8797 <br />October 835 171 192 22.5 5608.8 2337.3 1234.7 9180.8 <br />November 8'i0 170 193 22.1 5251.2 2485.8 142 7879 <br />December 799 169 191 22.7 5975 3587 0 9562 <br />Average 807 175 195.8 23.7 <br />Total 65004.3 28840.2 7423.5 101268 <br />Key to above headings: <br />Ave. - (gpm) - monthly average injection Flow rate during process operations. Production in calendar months. <br />Temp. -temperature in degrees F recovered at the pregnant liquor tank. <br />Assay Biprb - g/I sodium bicarbonate in the composited recovery liquor as total bicarbonate. (total bicarbonate = <br />g/I + 1.58 x carbonate g/I). <br />Tons -total monthly bicarbonate production without adjustments. <br />Figure 4-2 illustrates the 2000 pregnant liquor results and Figure 4-3 represents <br />monthly production for 2000. <br />15 <br />