Andrew Su, CEO at brokerage Compass Global Markets said the average cost of producing gold in Australia, home to some of the world's biggest gold miners, has jumped from $500 an ounce in 2007 to over $1,000 an ounce this year.
Persons (plural) is a very formal word. We only use it in rather legalistic contexts: [notice in a lift] Any person or persons found in possession of illegal substances will be prosecuted.
Persons are one of the two main classes which are the subject of rights, powers, and duties, the other being citizens. Persons may be natural or corporate. Citizens are a subclass of natural persons. Only persons have standing as parties under due process.