BHP Q1 attributable iron ore output 66.45 million tonnes

The headline number matters less than the fact that guidance was left untouched: shipments running ahead of attributable output points to drawdowns from stockpiles rather than a step-change in mine supply, which is worth watching as the quarter's real signal. Stable copper guidance alongside the iron ore figures also keeps BHP's diversification story intact at a time when the copper pipeline is the more closely watched part of the portfolio. Whether shipments continue to outpace production without a guidance revision is the open question.