1. Belt sampler (patented) - Sand

    Belt sampler (patented) - Sand

    153
    66
    487
  2. Belt sampler (patented) - Crushed rock

    Belt sampler (patented) - Crushed rock

    13
    6
    432
  3. Belt sampler (patented)

    Belt sampler (patented)

    17
    7
    256
  4. Belt Sampler (patented) used as diverter

    Belt Sampler (patented) used as diverter

    15
    7
    226