Standard Practice for Preparing Coal Samples for Analysis
different mass or top size. This procedure may be used to provide a sample of any mass and size consist from the gross or divided sample to, and including, the analysis sample. 6. Apparatus 6.1 Crushers or Grinders—Jaw, cone, or rotary crusher; hammer mill; roll; or other suitable crusher to reduce the sample to pass the sieve designated in 6.4.