Ammann is now offering a sophisticated add-on compaction system that can be used with excavators. The firm says that its APA add-on compactors can be used in areas that would be difficult for other machines to access. The attachment plates can be mounted on any standard excavator arm, offering high compaction forces and compaction speed. The vibration forces of the plates and the compaction pressure given by the excavators let the APA products compact at a depth of up to 1m and work safely on steep slopes or dangerous trenches.