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Three' Mile" Is'land

an island in the Susquehanna River, near Middletown, Pennsylvania, SE of Harrisburg: scene of a near-disastrous accident at a nuclear plant in 1979 that raised the issue of nuclear-energy safety.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

three-masterthree-mile limit
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