SINGAPORE, Oct 4 (Reuters) - London nickel prices were set for their fourth straight session of gains on Friday, as inventories fell near a seven-year low ahead of an exports ban from top supplier Indonesia.
Three-month nickel on the London Metal Exchange (LME) was up 0.2%, as of 0121 GMT. It has surged 65% so far this year on worries of a shortage after top ore supplier Indonesia said it would ban nickel ore exports from next year.
Nickel headline inventories in LME-approved warehouses dropped to 140,904 tonnes, their lowest since December 2012, the exchange data showed.
* PRICES: LME copper, zinc and tin were flat in low volume as China is closed for a long holiday, while lead fell 0.3%.
* ALUMINIUM: London aluminum rose 0.2% despite a rally in LME inventories, which hit a seven-week high at 964,275 tonnes.
* ANTOFAGASTA: Chile's Antofagasta, one of the world's top copper miners, negotiated on Thursday with workers in hopes of staving off a strike at its small Antucoya deposit in northern Chile, though union leaders said there had been little progress in discussions.
* COBALT: Canada's Fortune Minerals Ltd said on Thursday it would shelve plans to upsize its early-stage cobalt mine in the country's far north while it continues to hunt for a strategic partner.
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* Asian stocks edged higher, thanks to gains on Wall Street, but the mood was cautious before a key U.S. job report that could help determine whether the Federal Reserve cuts interest rates further.
DATA/EVENTS AHEAD (GMT)
1800 US Federal Reserve Chairman Jerome Powell gives
opening remarks before the "Fed Listens:
Perspectives on Maximum Employment and Price
Three month LME copper
Most active ShFE copper
Three month LME aluminum
Most active ShFE aluminum
Three month LME zinc
Most active ShFE zinc
Three month LME lead
Most active ShFE lead
Three month LME nickel
Most active ShFE nickel
Three month LME tin
Most active ShFE tin
ARBS (Reporting by Mai Nguyen; Editing by Aditya Soni)