The day after the primary election, the pro-Mark Begich super-PAC, Put Alaska First, is up with a new beautifully produced TV ad. This one takes on Dan Sullivan, who won the GOP primary on Tuesday night, for his alleged support of the highly controversial Pebble Mine in Western Alaska. If built, the mine would produce 80.6 billion pounds of copper, 107.4 million ounces of gold and 5.6 billion pounds of molybdenum. It would be one of the largest gold and copper mines in the world and would sit on the headwaters of one of the world’s largest wild salmon runs. The mine has been drawing significant opposition since 2006 and for the last few years, people have been pushing Begich on his views about it. Only in January did he come out against it, miming Ted Stevens’ long-held opposition as the “wrong mine” in the “wrong place.” By the time Begich took his stand, it was almost certain that the EPA would take preemptive action and block the mine’s development, which it is in the process of doing. The EPA’s actions are unprecedented. The Pebble Mine would be on state lands, and many say should be subject to state, not federal law. Pebble hasn’t officially applied for all the necessary permits, nor has it submitted a final project plan. However, the EPA says that under any scenario, the mine would destroy up to 94 miles of streams, including five to 22 miles of salmon spawning streams, and 5,350 acres of wetlands. To be clear: Sullivan, like Sen. Lisa Murkowski, U.S. Rep. Don Young, Gov. Sean Parnell, and nearly all of the state’s Republicans, hasn’t said that he supports the mine. Rather, they all object to the EPA’s preemptive process.