(Adds injuries)

JAKARTA, Aug 16 (Reuters) - Gunmen fired at a bus on a road leading to Freeport McMoran Copper & Gold Inc's <FCX.N> mine in Indonesia's Papua province, wounding five people, police said on Sunday.

The Grasberg mine, about 3,400 km (2,100 miles) east of Indonesia's capital of Jakarta, has the world's largest recoverable reserves of copper and the largest gold reserves.

It is the second time since Wednesday that a Freeport bus has been fired upon and follows a series of shootings last month, in which an Australian technical expert and a Freeport security guard were killed and several others injured.

Two men were hit by shrapnel and three were injured by glass that shattered when the bus carrying Freeport employees was shot at on Sunday, said Nanan Soekarna, national police spokesman. The vehicle was part of a 16-bus convoy guarded by 20 security officials, he said.

Officials from the company were not immediately available to comment.

Last month, police arrested eight suspects, two of whom were working for Freeport, over a spate of shootings near the Grasberg mine.

The mine has been a source of friction over its environmental impact, the share of revenues going to Papua and payments to Indonesian security forces who help guard the site.

Secessionists have waged a low-level insurgency for decades in Papua. The Indonesian military and police, which keep a tight rein on the area, have rejected accusations that the unrest is linked to conflict over their commercial interests near the Grasberg mine. (Reporting by Karima Anjani and Telly Nathalia; Editing by Sunanda Creagh)

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