TOKYO, Aug 5 (Reuters) - Japanese trading firm Marubeni Corp 8002.T , which holds a stake in the $10 billion Roy Hill iron ore mine under construction in Australia, said on Wednesday the start-up of the mine may be delayed until end-September or mid-October.
The previous target for start-up of the mine had been earlier in September.
Despite slumping iron ore prices, Marubeni sees no risk of impairment loss on the Roy Hill asset, the company's Chief Financial Officer Yukihiko Matsumura told a news conference.