July 18 (Reuters) - Global miner Rio Tinto RIO.AX RIO.L said on Tuesday second-quarter iron ore shipments from Australia fell 6 percent from a year ago due to rail maintenance work that slowed haulage, cutting full-year guidance.
Shipping guidance for 2017 was trimmed to 330 million tonnes from an earlier range of 330 million to 340 million tonnes, the company said.