Federal officials have disclosed that they shipped radioactive plutonium to Nevada in spite of the state’s vehement opposition to the idea and concerns that doing so would be a slippery slope to opening the state up to further nuclear waste dumping. In a federal court filing on Wednesday, National Nuclear Security Administration General Counsel Bruce Diamond stated that the agency sent about half a metric ton of the substance sometime before November 2018, prior to Nevada suing over the proposed move. The transfer was done after a U.S. District Court in South Carolina ordered the material be removed from that state.