Glacier Gravel Co. Kit 55/8 x 65/8 x 61/8" x x Walthers . ... p. 544 2019 HO Scale Reference Book p. 212 2016 NZ Scale Reference Book. ... The Walthers Cornerstone Glacier Gravel Co. is a model of a stone crusherwasher with equipment for loading rail cars or trucks. Railroads have an enormous appetite for ...