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<br />ORE PERIMETER CHANGES <br />PATTERN ORE BLOCK BENCH DATE <br />DESCRIPTION <br />TONNAGE CHANGE <br />GRADE CHANGE <br />CHECK SAMPLES <br />copies to: Engineering <br />files <br />Figure 5. Ore perimeter change documentation: example cif form used <br />to keep track of the changes in tons and gr~.de. <br />Pattern: the number of the ore pattern. <br />Ore Block: the number of the block of ore affected <br />by the change. <br />Bench: the level of the changes. <br />Date: the date that the perimeter was changed. <br />Description: what and why the perimeter was <br />changed, as well as any other observations. <br />Tonnage change: estimated change, and how <br />calculated. <br />Grade change: estimated grade change from check <br />samples <br />Copies of the documentation are given to the Engineering <br />for tonnage and grade corrections. <br />Rev. 4/20/93 <br />