Right machine wrong timing
Image: From a Caterpillar promotional spec sheet dated 1979, the businesslike lines of the 639D elevating scraper are very apparent. To the best of my...
Tag : earthmoving history
A 16-ton beast: the Oliver OC-18
Image: Oliver promotional photo of an OC-18, taken on a highway construction job in the USA. The machine has a Heil cable-controlled straight blade with...