The company has grown to make a broader line of products in locations in Hyderabad (Andhra Pradesh), Naini, Allahabad (Uttar Pradesh) as well as the original plant in Rupnarainpur.
From Rajmahal, construction progressed rapidly, moving westward along the banks of the Ganges, reaching Bhagalpur in 1861, Munger in February 1862, and opposite Varanasi (across the Ganges) in December 1862 and then on to Naini on the bank of the Yamuna.
Naini Tal had sent down her contingent with all speed; the lathering ponies of the Dalhousie Road staggered into Pathankot, taxed to the full stretch of their strength; while from cloudy Darjiling the Calcutta Mail whirled up the last straggler of the little army that was to fight a fight, in which was neither medal nor honour for the winning, against an enemy none other than "the sickness that destroyeth in the noonday."