(Reuters) -U.S. President Donald Trump is expected to sign an executive order on Thursday to boost the deep-sea mining industry, the latest attempt to tap international deposits of nickel, copper and other critical minerals used widely across the economy.

Donald Trump has signed a controversial executive order aimed at stepping up deep-sea mining within US and in international waters. Thursday's order is the latest issued by the US president to try to increase America's access to minerals used by the aerospace,