More than 40 years after it was first recorded, a strip-mining protest song still rankles one of the nation's largest coal mining companies. Peabody Energy Corp., which operates major mines in Wyoming, asked a federal judge in Casper to strike lyrics of singer-songwriter John Prine's 1971 song "Paradise" from a federal lawsuit filed by a pair of environmental activists who claim they were jailed for demonstrating at a company shareholders meeting.