![Rio Tinto said the strike in Chile and Cyclone Debbie has hurt its output of copper and metallurgical coal.](/web/20170426043750im_/http://www.smh.com.au/content/dam/images/g/v/i/a/7/m/image.related.wideLandscape.460x259.gvsfxk.png/1493181377233.jpg)
BHP slashes production forecast after Chile strike, Cyclone Debbie
The mining giant has reported a 20 per cent drop in nine-month copper production and cut its full-year production guidance due to industrial action at its Escondida mine in northern Chile.