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.
WHO-WHOSE-WHOM-THAT-WHICH-WHERE. 1  We use who when referring to people or when we want to know the person. In modern speech, we use who, or we leave out the pronoun. â¢ 2  You are referring to a person who no longer works here. â¢ 3  The person to whom you are referring no longer works here. â¢ 4  The person (who) you are you referring to no longer works here.