“Stocking RDF at the compost-based waste processing plants is also a risk to infrastructure worth several hundred crores. Moreover, the buried RDF cache can be retrieved any day, once the cement factories come around and are ready to lift it. As the temperature rises, these massive piles of RDF are a huge fire security risk, one that cement factories are unwilling to take. The fire was spread over several acres and more than 2,000 tonnes of RDF was burnt down, BBMP officials said. With the nearest cement factory at Kalaburagi, nearly 600 km from the city, cement factories are asking for ?2,500 as transportation fee for a tonne of RDF..