Platinum demand fell nearly 7 percent last year, with sharp falls seen in Japanese investment and Chinese jewellery buying as well as a slowdown in consumption by carmakers, who use the metal in catalytic converters.
Proceeds from the placing will fund ongoing diamond exploration in South Africa and Botswana, and will also provide the company with additional working capital, the company said.
The firm, North America's No.1 producer of coking coal, said the boost in profit was mainly thanks to the reversal of an impairment charge related to an improvement in the outlook for steelmaking commodity.
Some lawmakers urged him to save steel and aluminum producers in their states, but others urged caution because higher prices would hurt manufacturers.
Some members of Mongolia's parliament sought to limit the number of new resident permits granted to foreigners to 100 per year to protect domestic jobs.