INDICATOR KRIGING AS APPLIED TO AN ALLUVIAL GOLD
gold recovered from washing that volume was also given. The linear correlation coefficient of grade (amount of gold recovered divided by the volume of material washed) and volume was calcu lated as -0.156. This means approximately 2.5 percent of the variation in the grade-volume data could be explained by a linearExtrac-Tec | Gravity separation equipment for alluvial,,Gold, Minerals, Gems and Lead Remediation Find out more about the use of our systems for Alluvial or Placer Mining, Hard Rock gold recovery, concentration of a broad range of minerals, gemstone recovery and lead remediation of shooting ranges.Gold - the exploration and mining history - Part III,In volume the total amount of gold won from the earth would occupy 6,300 m 3 or an 18.5 m cube, a small volume of metal indeed to have so influenced the toil, trials, tribulations, and destiny of man for 5,000 years. The current annual world production of gold is about 1,338 metric tons.