Its index came in at 52, up slightly from 51.9 a month earlier.
The iron ore price rose yesterday and 62% Australian fines were up 2.9% to US$195 per tonne according to MySteel, while other agencies have the price above $200/t again.
The gold price has softened but remains above $1,900 an ounce on the spot market.
Mining majors performed strongly in London yesterday after the bank holiday.
Anglo American, Antofagasta and Rio Tinto were all up about 4%.
In Toronto, Barrick Gold rose 2.09% and Freeport-McMoRan closed up 3.49% in New York.
Finally, BHP was up about 3% in midday Australian trade.
