NMDC cashed in on the global metals boom, going by the Q4FY21 results. The PSU, which is India's biggest producer of iron ore, registered Rs 6,848 crore in revenues, a rise of 148 per cent over Rs 3,187 crore reported in Q4FY20. The PAT expanded to Rs 2,828 crore against Rs 351 crore a year ago, a rise of over 700 per cent. NMDC's turnover for FY21 was Rs 15,370 crore versus Rs 11,699 crore in FY20 -- growth of 31 per cent. The PAT for last financial year was Rs 6,253 crore, against Rs 3,610 crore the previous year.