N2 Pneumatic Gun 
    N 2 reliable and prooven Gunite Machine
    The Allentown’s N-type Pneumatic gun is a modern version of the
  original cement gun built by Allentown for a century.
  - Most versatile machine available for the complete range of
    dry-process gunite, shotcrete and refractory applications.
 
  - Ruggedly built to withstand hard, continuous use.
 
  - Renowned for its ability to feed dry or damp, coarse or fine, and
    dense or lightweight materials at a smooth, accurately metered rate
    over 500' (152m) vertically or 1,000' (305m) horizontally.