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Blasts begin at I-40 rock slide site; closure will last at least 4 months

HARMON DEN, N.C. - A contractor on Interstate 40 on Tuesday detonated dynamite and ammonium nitrate, sending a dust cloud 300 feet into the air and rocks raining down 200 yards away.

The blast was the first in a series of explosions that workers will use to remove large boulders hanging from the top of the 150-foot slide that closed I-40 in both directions.

Mike Patton, a N.C. Department of Transportation technician overseeing the work, said the blast, or "shot" as it's called, successfully brought down some of the dangerous overhanging material at the top of the slide.

Read the full report at the Knoxville News Sentinel's Web site.

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