By Patrick McGroarty

JOHANNESBURG--Talks broke down on Monday between South Africa's three top gold producers and unions representing workers whose strikes have hobbled production at their mines.

The Chamber of Mines, negotiating on behalf of Gold Fields Ltd. (GFI), AngloGold Ashanti Ltd. (ANG.JO) and Harmony Gold Mining Co Ltd. (HAR.JO) said that three unions including the National Union of Mineworkers hadn't reached a consensus with striking workers over whether to accept a package of pay rises an return to work.

"The unions have indicated that there have been mixed reactions by their members to the chamber's proposals, and that they are unable to confirm a return to work," the chamber said in a statement. "In response, the chamber has indicated that it is not in a position to make any further proposals and that it, and the individual companies, will now explore other avenues to try to bring normality to the gold mining industry."

The strikes have shut all seven of AngloGold's South African mines, which account for about a third of its total production. Two of Gold Fields' mines and one operated by Harmony are also closed due to the strike.

Strikes spread to the gold industry after first crippling the platinum sector, most visibly with a six-week-long strike at a mine owned by Lonmin PLC (LMI.LN) north of Johannesburg. Police opened fire on protesters at that mine in mid-August, killing 34 people.

Some 40,000 truck drivers also went on strike in September, resolved last week with a package of big pay increases in each of the next three years.

And members of the South African Municipal Workers Union, representing 190,000 city employees across the country, have threatened to strike this week if their demands for more generous pay aren't met. Already, roughly 10,000 of the union's members in two northern provinces are on strike, as well as 1,000 bus drivers in Johannesburg. More city workers will go on strike unless government officials meet their demands for better pay, said Tahir Sema, a spokesman for the union.

"We only hope discussions can begin so that the (strike) actions can be avoided even at this 11th hour," Mr. Sema said.

Write to Patrick McGroarty at patrick.mcgroarty@dowjones.com

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