--Argentina mining industry on the ropes as costs, regulations bite

--Investors Move to cancel Argentina mining projects

--Miners balk at government limits on profit repatriation

By Shane Romig

BUENOS AIRES--Argentina's mining sector is on the ropes as soaring costs and government regulations scuttle dreams of a mining boom in a country better known for its grain and beef exports.

Mining exploration as measured by both investment and drilling plunged 50% on the year in 2012 and is likely to slump an additional 20% this year, said Julio Rios Gomez, president of mining exploration chamber Gemera.

Junior mining companies, small firms that explore new deposits and develop mining properties, usually focusing on precious metals such as gold and silver, can't get financing and there's no one willing to buy promising discoveries, Mr. Gomez said.

The recent slump in prices for Argentina's copper, gold and silver exports isn't the only headwind facing miners. Despite its vast untapped mineral wealth, Argentina has lost its appeal as a place to dig because of costs, capital controls, and legal insecurity.

"Mining isn't a profitable business the way things are and existing mines are cutting back production," said Mario Capello, a mining consultant and former congressman.

Inflation and lower metal prices have pressured margins, said Jorge Palmes, general manager of AngloGold Ashanti Ltd.'s (AU, ANG.JO) Cerro Vanguardia gold mine in Santa Cruz Province. The next step would be to cut costs, but nobody wants to start laying people off, Mr. Palmes said.

Most economists think annual inflation has been at or above 20% for the past three years as the central bank keeps interest rates low and expands the money supply to finance the government. Wages alone rose almost 25% on the year in March, according to the government.

Salaries aren't the only source of cost pressure. Miners have to exchange the U.S. dollars they get from exports into pesos on Argentina's regulated currency market at a rate that is 40% less than what the greenback fetches on the black market.

But many of the services that mining companies use are priced at the black market dollar rate, said Ricardo Alonso, a lawmaker who heads the Mining, Transportation and Communications Committee in Salta Province's lower house.

Years of high inflation have made Argentina one of the most expensive countries for mining, said Christopher Ecclestone, principal and mining strategist at financial advisors Hallgarten & Co.

Some companies are cancelling projects. In December, Pan American Silver Corp. (PAAS, PAA.T) shelved work on its Navidad silver mine in Chubut Province, saying inflation and proposed tax increases would make the project unviable.

Brazil's Vale SA (VALE) recently stopped work on its Rio Colorado potash mine in Mendoza Province after already spending $2.23 billion. The Argentine government said the company told it the mine's $5.9 billion price tag had nearly doubled.

The future of Barrick Gold Corp's (ABX) massive Pascua Lama gold and silver mine that straddles the Argentina-Chile boarder is also up in the air.

In April, a Chilean court suspended construction due to alleged pollution. Work continues in Argentina, although the Argentine Supreme Court is considering a case on the constitutionality of a glacier-protection law that could derail the mine.

Barrick so far has spent about $4.8 billion on Pascua Lama, which has been plagued by overruns. In February, the company announced a cost increase of $500 million, bringing the total price tag to finish the mine to $8.5 billion.

Barrick said in its first quarter earnings report that it's evaluating different options for Pascua Lama, including suspending construction. A company spokesman said that Barrick wants to finish Pascua Lama.

Government limits on the repatriation of dividends and profits has sent a shudder through the sector. Canada's McEwen Mining Inc. (MUX, MUX.T) is considering the sale of its Los Azules copper project to fund construction of the El Gallo gold mine in Mexico due to those restrictions. McEwen had planned to use the profits from its Argentina mine to build El Gallo.

The government has authorized Cerro Vanguardia to remit $1 million dollars a day back, but sometimes that tap is slammed shut, Mr. Palmes said. Cerro Vanguardia has repatriated about $75 million of the $100 million it made in profits in 2011. The company hopes to start sending $100 million in last year's profits back to headquarters soon, he added.

Legal uncertainty also looms large in investors' minds. Last year, President Cristina Kirchner nationalized Argentina's top oil company YPF SA (YPF) without offering compensation to its former controlling shareholder.

More recently, the Kirchner-controlled Congress passed controversial legislation that severely limits the ability of judges to issue injunctions against government acts. Those injunctions are frequently the only legal protection that mining companies have, said Carlos Frias, attorney and former mining under secretary.

Meanwhile, cash-strapped provincial governments like Santa Cruz are pushing to increase taxes and expropriate stakes in mining companies.

"The higher taxes will make projects unfeasible," Mr. Palmes said. "The numbers don't add up."

Write to Shane Romig at shane.romig@dowjones.com

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