B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
B27N3/08—Moulding or pressing
B27N3/10—Moulding of mats
B27N3/14—Distributing or orienting the particles or fibres
Machine mobile pour nettoyer un lit de ballast, comportant des dispositifs de nivellement et de compactage, et procede pour traiter un lit de ballast a l'aide d'une telle machine