General excavation and excavation of trenches in any terrain or subsoil including loading and unloading, slope landscaping, subsoiling and improvement of subsoil including transport, paving and compaction, recycling of excavation materials at their productions site with the use of a mobile jaw crusher, supply & transport of aggregates using proprietary mechanical means such as excavators, loaders, diggers, rollers, articulated trucks and trolleys, trucks and additional accessories such as breakers.