Explanation:

Tata Iron and Steel Company (TISCO) was founded by Jamsetji Tata and established by Dorabji Tata on 26 August 1907. TISCO started pig iron production in 1911 and began producing steel in 1912 as a branch of Jamsetji's Tata Group. The first steel ingot was manufactured on 16 February 1912. During the First World War (1914-1918), the company made rapid progress. By 1939, it operated the largest steel plant in the British Empire.