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ore Control Ma:tual page 3 <br />appearance, and will be used for rough ore perimeter projections <br />and crosschecks. <br />E. Blasthole sample assay: all blastholes are assayed by the <br />Assay Lab for gold. A one assay-ton fire assay is used. Alternate <br />AA assay methods may be developed in the future. Se:.ected holes <br />(see C.) are analyzed for cyanide-soluble copper using special wet- <br />chem preparation and standard AA analysis. Assay result sheets are <br />delivered to Mine Engineering as soon as available. <br />F, Assay bench plots: Mine Engineering combines blast hole survey. <br />and assay data to produce a pattern map showing gold and copper <br />distribution. Additional information that is plotted o.i the <br />pattern maps includes topography, exploration drilling composite- <br />assay values, and projected ore perimeters. The Mine Geologist <br />reviews rep samples of exploration holes within the pat~:ern to help <br />determine what rack and mineralization types fall within the <br />pattern. This information can be helpful in dilution/loss work <br />later during mining. <br />G. Ore perimeter development: using the pattern map, Mine <br />Engineering will determine ore types and waste in t:ie pattern. <br />Each ore type is outlined by a perimeter. Tonnages and grade o= <br />each ore type are developed from the pattern maps and are noted on <br />the map. <br />H. Ore control maps: copies of the pattern map are made and <br />color-coded (see Fig. 1). The color-coded maps are to direct the <br />loader operators when digging or mucking any material. Anv ore <br />control changes are to be done through the Mine Geologist. The <br />Mine Geologist will document all ore control changes with <br />supporting data (see Figure 5.). <br />I. Blasting: the Blasting Contractor, with assistancEa from Mine <br />ops, carries out the blasting procedure, as per established company <br />policy. <br />J. Ore perimeter flagging: using survey data from the pattern map, <br />Mine Engineering stakes out the ore type perimet=_rs. ore <br />perimeters are flagged with survey ribbon according to the <br />following colors after the blast: <br />1) blue flagging: waste side <br />2) yellow flagging: sub-grade <br />(Ore from these areas goes to the sub-grade srockpile by <br />the parking ditch.) <br />3) orange flagging: low-grade <br />4) pink/black flagging: high-grade <br />5) green flagging: high-copper <br />Rev. 4/201 93 <br />