Biomass feedstock preparation systems
Biomass feedstock preparation systems


More than just WSM machines…
Though the heart of a BioPrep processor is WSM’s world-renowned machinery, only WSM can expertly integrate those machines to make a BioPrep system what it is: a faster, more efficient complete processing system feeding your bio-fuel plant more reliably and more economically. If you are looking for a biomass shredder or biomass shredding machine, we have what you need!
… and more than just WSM systems integration
WSM has over 67 years experience shredding, grinding, milling, screening, and crushing everything from unsorted urban waste to raw timber. We know a lot about durability and what it takes to make machines perform with minimal downtime in any environment.
You tell us what you’re grinding, how small you want it, and we’ll know what to do about it.


We’re together from start to finish… and beyond.
WSM partners with you every step of the way.
Our 67 years of field experience help you in site preparation, engineering, manufacturing, delivery, build, testing, and startup.
Beyond making sure everything is up and running, our startup service includes our technical service group and maintenance training.
Industries WSM BioPrep serves: alternative fuel, anaerobic digestion, biofuels/bio-refining, biogas, biomass power, cellulosic ethanol, pellets/densified fuel, RDF, recycling/compost, soils/mulch, and wood products/pulp & paper.
Whether you need Biomass Feedstock grinders or industrial milling machines of Biomass, West Salem Machinery can help find the solution for your needs.

Baled Ag fiber processing: WSM BioPrep leads the industry
WSM BioPrep Bale Processing Systems* are making a name for themselves around the world. WSM high capacity Bale Processing Systems feature production lines capable of processing up to 60 large rectangular bales an hour into process-ready fiber. Each production line can be configured to include bulk bale receiving and singulation, bale QC inspection with reject option, automatic de-stringing & twine collection, bale chopping/metering, screening & cleaning, and finish milling. By configuring multiple lines — the WSM BioPrep Bale Processing System can deliver high capacity production of baled feedstock materials. *Patents pending