Machinery such as trench rollers, reversible compactors, single drum rollers, vibratory plates, mini rollers etc. There were larger and heavier compaction equipment, like large vibratory compactors and heavier steel-face rollers. Vibrating compactors are used for soil compaction especially in foundations for roads, railways, and buildings. Main compaction is produced by the landfill compactors steel tooth on the wheel drums. Many small incinerators formerly found in apartment houses have now been replaced by waste compactors. Different compactors are used in scrap metal processing, the most familiar being the car crusher. There are also trash compactors, hydraulic or manual, designed for residential use. Trash compactors are available for both residential and commercial use. James' father, Jason, was sales director of a company selling waste compactors and baling machines. Normally powered by hydraulics, compactors take many shapes and sizes. GPS technology is applied in both trash compactors and soil compactors. The funds were instead used to purchase trash compactors. These compactors typically come in electric and hydraulic operation, with quite a few loading configurations. In 1994, the production of compactors and portable power generators began. Pixar's studies of trash compactors during their visits to recycling stations inspired his body.