(Recasts and updates prices)

By Brijesh Patel

Oct 8 (Reuters) - Copper prices traded slightly higher

after early losses on Wednesday, as concerns over supply

disruptions offset the pressure from a rising U.S. dollar.

Three-month copper on the London Metal Exchange was

up 0.1% at $10,768 per metric ton by 0713 GMT.

The dollar index extended gains to a third session,

touching a more-than one-month high against its rivals. A firmer

dollar makes greenback-denominated assets, like copper, more

expensive for holders of other currencies.

Operations at Indonesia's Grasberg mine, the world's

second-largest copper mine accounting for 3% of global

concentrate production, have been halted for nearly a month

after a mud-flow disaster killed seven workers.

The suspension at Grasberg, coupled with disruptions at the

Kamoa-Kakula mine in the Democratic Republic of Congo due to an

earthquake, and the El Teniente mine in Chile after an accident

in July, suggest supply concerns are likely to persist this

year.

"The recent supply-side disruptions remain a supportive

factor for copper prices," analysts at ANZ said.

Grasberg's operator, Freeport, didn't say when

operations would be back to normal. This, along with disruptions

in Chile, are helping copper, ANZ said.

Chile's output fell 9.9% year-on-year in August after the

accident at Codelco's flagship mine on July 31.

Chile, the world's largest copper producer, exported $4.39

billion worth of the metal in September, down 2.03%

year-on-year, its central bank said on Tuesday.

Among other London metals, aluminium was steady at

$2,740 a ton, nickel fell 0.4% to $15,425, lead

lost 0.3% to $2,004.5, zinc slipped 0.4% to $3,033, and

tin was down 0.1% at $36,455.

Chinese markets are closed from October 1 to 8 for the

Golden Week holiday.

For the top stories in metals and other news, click

or