The AFR seems to think so:
The world’s biggest iron ore miner, Vale of Brazil, says it is willing to temporarily slow exports of the bulk commodity, in comments that Morgans analyst Adrian Prendergast believes could “trigger a strong rally in spot iron ore prices”.
That’s clearly their intention. But RIO fell 1% in New York. Dalian iron ore futures, which were clearly cognisant of the Vale comments, sank 2.5% in overnight trade and with Chinese, Singaporean and HK markets closed today that’s the only lead markets have.