WSM vertical feed grinders are rugged while featuring a heavy duty rotor with innovative disc and hammer configuration options and are designed to process a wide range of feedstock at rates up to 150 tons per hour. The grinders offer the flexibility for fine to coarse grinding and includes WSM’s complete biomass feedstock processing systems. The turn-key sustem includes bulk-feeders, pre-screening, cleaning, and all engineering and project management. Both the grinders and processing systems feature mill duty construction.