Brown Bear builds multiple sizes of composting machines and attachments that are also used for sludge drying and bioremediation. Attachments for skidsteers, compact track loaders and large wheel loaders are quick on and quick off. Large self propelled units up to 375 HP also available. Long life, low maintenance attachments make quick work of windrow compost aeration, sludge drying and bioremediation. See them at www.brownbearcorp.com and www.youtube.com/user/BrownBear6294/videos.