Loaders [conveyors]; loaders [machines]; crawler-tracked loaders; loaders [earth moving machines]; rubber tracks for use with crawlers on construction machines; rubber tracks for use with crawlers on mining machines; rubber tracks for use with crawlers on loading-unloading machines and apparatus; commercial rubber-tracked carriers in the nature of crawler-tracked loaders with slow forward guide for use as integrated tool carriers and for conveying tools, drilling rigs, excavators being earth ...