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.
About 0.7% of the words a person uses in the course of a day are swear words, which may not sound significant except that as Mohr notes, we use first-person plural pronouns â words like we, our and ourselves â at about the same rate.