In the context of the foreign exchange market, traders liquidate their positions in various currencies to take up positions in safe-haven currencies, such as the US dollar. Sometimes, the choice of a safe haven currency is more of a choice based on prevailing sentiments rather than one of economic statistics.
Typical commercial US dump trucks are double-axle dually setups carrying about 10 cubic yards of material, which is about 10 short tons for typical materials like gravel or soil. A big, heavy-duty triple-axle model might reach 15 tons. A single-axle model based on a passenger truck might only hold 3 tons. A side-dump semi trailer might hold 30 tons.
A cubic yard is 27 cubic feet. Most concrete trucks haul nine cubic yards of concrete. That amount is enough to pour a 72 foot by 10 foot section of driveway at four inches deep. Your local Department of Transportation has told your concrete supplier how much they can carry. Most trucks can carry up to 11 1/2 cubic yards.