EARTH-WORKING MACHINERY; NAMELY, BULLDOZERS, SWAMP BULLDOZERS, AMPHIBIOUS BULLDOZERS, TIRE-DOZERS, MOTOR SCRAPERS, TOWED SCRAPERS, RIPPERS AND RAKE DOZERS; EARTH HANDLING MACHINERY; NAMELY, SHOVEL LOADERS, WHEEL LOADERS, TRACTOR LOADERS, COMPACTORS, AND LOADER BUCKETS; EXCAVATORS; NAMELY, BACK-HOES, DOZER SHOVELS, SWAMP DOZER-SHOVELS, POWER SHOVELS, BUCKET EXCAVATORS, MINING SHOVELS, TRENCHERS AND TUNNEL BORING MACHINES; CONSTRUCTION MACHINERY; NAMELY, ROAD ROLLERS, PIPE LAYERS, DROP-HAMMERS,...