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(RSCL), the flagship company of DHANUKA GROUP has Sugar (5,000 TCD),Distillery(50 KLPD), Ethanol (45 KLPD) & Co-Gen of Power ( 3 MW) and Organic Fertiliser factories in North Bihar (India) located at village and railway station, Riga, on Narkatiaganj- Samastipur meter gauge section of Northern Eastern Railway.

SUGAR: Company’s sugar factory is one of the oldest sugar factory in India which was set-up in 1933 by The Belsund Sugar & Industries limited under British Management which was taken over by Dhanukas in 1950. Under the Scheme of Arrangement as sanctioned by Hon’ble Calcutta High Court the sugar factory was transferred w.e.f.1.10.1981 to Riga Sugar Company Limited which was incorporated on 2^nd September,1980. The initial installed capacity of the sugar plant was 800 TCD which was increased to 1200 TCD in 1956 than increased to 2000 TCD in 1987-88. In 1995-96 the company undertaken Expansion-cum-Diversification scheme whereby the capacity of sugar plant was increases to    2500 TCD and New Distillery Plant of 50 KLPD was set-up.

In 1999-2000 the company implemented the scheme of  Sugar Technology Mission (STM) project for Technological Upgradation-cum-Capacity Optimisation Scheme of Sugar Unit as approved by STM, Government of India at the Projected cost of 2675 Lacs and simultaneously undertaken  expansion scheme for increasing the capacity to 3500, which was completed in the season 1999-2000. Consequent to said STM Scheme the Major machineries of the sugar plant was newly installed like replacement of entire Mills, addition of Boiler, Turbine and Equipments in Boiling/Manufacturing House.