Roller Mills | Grinding Mills | Williams CrusherWilliams Patent Crusher is the world leader in Fluid Bed Roller Mill design and . This promotes rapid efficient drying of all material types, including lignite and.type of mills applying for lignit,Mills College :: Studio Art :: Apply :: Application InformationFeb 3, 2017 . Additional requirements for international students. . at Mills are required to submit a Certification of Finances form and bank statement.