Why are Rio Tinto, Fortescue and BHP shares racing higher today?

It’s a good day to own BHP Group Ltd (ASX: BHP) shares today. Not to mention the other two S&P/ASX 200 Index (ASX: XJO) mining giants.

In morning trade on Tuesday, Rio Tinto Ltd (ASX: RIO) shares are changing hands for $129.63 apiece, up 3.5%.

Fortescue Ltd (ASX:…