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sample tester-grinder

A professional who tends crushers, ovens, and screens to test samples of ore. Respnsibilities include:

  • Starts crusher to pulverize ore.
  • Removes ore from crusher and places it in oven to dry.
  • Sends portion of sample to laboratory for chemical analysis.
  • Places sample in vibrator containing magnets and water.
  • Starts vibrator to separate magnetic content of ore from impurities.
  • Drains water from vibrator and weighs magnetic remainder.
  • Pours ore sample through series of vibrating screens of different size openings to separate ore samples.
  • Weighs and records each size of ore.
  • Records number of tests performed.
  • May collect ore samples from various sites in plant or mine, and record origin of samples.
  • May perform chemical sedimentation or hardness tests on samples.
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