ISS on Monday had recommended Turquoise Hill shareholders to vote "against" the deal, joining the Canadian miner's second-largest shareholder Pentwater Capital Management.
The second-largest US steelmaker said Tuesday that it is being hit by higher input costs and maintenance activities, which led to adjusted earnings before items of $436 million in the third quarter, about 50% below analyst estimates.
The Copper Mark extends its responsible mining assessment already covering a fifth of global copper production, to molybdenum, nickel and zinc with the launch of a pilot program.