Crushing is usually part of a sampling system where on-line sample preparation is required. Sampling standards dictate the required reduction of material size and volume. Crushing is also the primary source of possible moisture loss in the extracted sample. James A. Redding Company sampling systems minimize moisture loss by sealing the path of the sample, and sizing the crusher drive to achieve the lowest practical rotor speed. Hammermill crushers are used in the majority of cases. A number of models are available to handle different material sizes and tonnages. Most crushers we utilize have fixed hammers, and easy access upper housings to reduce dust and provide ease of inspection and maintenance.