alluvial mining related

  • Alluvial Mining Employs 80,000 in PNG Papua New

    Aug 02, 2017· Alluvial Mining Activities In The Country Are Largely Unregulated, According To The PNG Extractive Industries Transparency Initiative

  • Placer deposit Wikipedia

    In geology, a placer deposit or placer is an accumulation of valuable minerals formed by gravity separation during sedimentary processes. The name is from the Spanish ...