John may be able to give a better response.
Just off the top I would say in a lot of ways it depends on what the commodity price is. If they already have a healthy margin or a healthy profit given where their particular commodity is selling on the market versus their costs, they'll be okay. If they're borderline.... I know that for some of the mines that we hope to see come to fruition, they're really challenged, given today's price of gold, for example, is they need the gold price to go up another $100, $200, or $300 in order for the mine to be profitable. The ongoing expense of operating costs will actually contribute to the decision of whether or not they will put a shovel in the ground.
John, do you have anything to add?