Thanks to systematic development directed at requirements on-site, wire saws equipped with diamond wires are now essential items of equipment for drilling and sawing contractors. It is no longer possible to consider trying to manage without them where refurbishment, demolition or even new construction operations are concerned, and they are in particular demand where flexibility of application and meeting of deadlines are important considerations. This was the case at one of Berlin's large construction sites, where the remains of a 50 m long concrete wall had to be demolished in such a way as to fit in with certain special requirements.