Nukes in my backyard by Jennifer Lai @FortuneMagazine March 11, 2010, 1:30 PM EST E-mail Tweet Facebook Google Plus Linkedin Share icons They’re lean, clean, power-generating machines. But would a town really bury a mini nuclear reactor under its streets? By Brian Dumaine, assistant managing editor Long left for dead, the U.S. nuclear power industry appears poised for a comeback. President Barack Obama earlier this year announced an $8.3 billion loan guarantee to help the Georgia utility Southern Co. build two large reactors, and he wants to triple the amount of federal loan guarantees for plant construction to $54 billion. Obama hopes a slew of new plants will create jobs and lots of affordable, clean electricity. The problem: Even with the help of loan guarantees, full-scale nuclear power plants remain insanely expensive to build (conventional plants start at $5 billion, industry executives say). Read the rest of the story.