Building Research Institute: communist era concrete blocks are safe

The "big slabs", some them prefabricated, block flats from the communist era are still safe, according to the Building Research Institute which conducted inspections and tests on a few hundred of such buildings. These so-called big slab blocks consist of 4 million apartments which are home to over 12 million Poles. Although they were intended to stand for only a limited number of years, many of them could still serve future generations.