1200 USD per ounce x 16 oz per lb x 2000 lb per ton x 150,000 =5.76E12 USD
5,760,000,000,000 USD, except for the fact that Troy ounces are slightly different than normal ounces. Too lazy to look up.
5,760,000,000,000 USD, except for the fact that Troy ounces are slightly different than normal ounces. Too lazy to look up.
edit:typo