Vale and Rio Tinto produced more iron ore, which capesize bulkers haul to China, in the first quarter than they did a year ago.

Brazil’s Vale mined 79.3m tonnes of iron ore during the first three months, up 11% from a year earlier.

It attributed the higher volume to stronger operational performance at its Serra Sul mine, which produces an unmatched 90m tonnes of iron ore per year, and lower rainfall in the state of Minas Gerais.