👉 India signs 15-year contract with ISA for deep-sea mining for polymetallic sulphides 👉 India becomes the first nation to enter into two contracts with the ISA for polymetallic sulphides exploration 👉 The new agreement covers a 10,000km² region in the Carlsberg Ridge in the Indian Ocean 👉 Polymetallic sulphides are mineral deposits rich in metals such as copper, zinc, gold, and silver