Indian Metals & Ferro Alloys Ltd (IMFA), India’s largest integrated producer of Ferro Alloys is the first in the country to set up a Low Density Aggregate (LDA) plant at Choudwar, Dist. Cuttack, Odisha. The plant has an annual capacity of 1,75,000 MT per annum. The plant has online fly ash feeding system from 120 MW power plant silo. LDA is produced through a process of pelletisation and sintering of fly ash. The plant is unique as it uses off gas generated from other plant furnaces for firing and sintering purpose. The plant is commissioned in 2014.

LDA has received Green product certification by CII- Green Products & Services Council.