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FILE - In this Jan. 16, 2014 file photo, Ohio Highway Patrol Lt. Anne Ralston stands in a storage area for boxes of drugs already tested by the Patrol's crime lab in Columbus, Ohio. For years, Ohio troopers destroyed thousands of pounds of seized drugs for free at factories where the containers were placed into molten steel and disintegrated. That practice has become less tenable over time as companies worried about emissions and environmental concerns and whether the process might skew employee drug tests. (AP Photo/Kantele Franko, File)

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In this May 20, 2014 photo, laborers and machines work along what will eventually be an improved mountain highway, during a road-building operation on Highway 36 between Lyons at Estes Park, Colorado. The goal of the project is to move the road further from the adjacent river, which undermined the road for miles during floods the previous fall, in hopes of preventing such destructive flooding in the future. (AP Photo/Brennan Linsley)

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In this May 20, 2014 photo, heavy machinery is used to place dirt and rock along what will eventually be an improved mountain highway, during a road-building operation on Highway 36 between Lyons at Estes Park, Colorado. The goal of the project is to move the road further from the adjacent river, which undermined the road for miles during floods the previous fall, in hopes of preventing such destructive flooding in the future. (AP Photo/Brennan Linsley)

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In this May 20, 2014 photo, American Civil Constructor's Jim Overlin uses a GPS tool to check exact height consistency along what will eventually be an improved mountain highway, during a road-building operation on Highway 36 between Lyons at Estes Park, Colorado. The goal of the project is to move the road further from the adjacent river, which undermined the road for miles during floods the previous fall, in hopes of preventing such destructive flooding in the future. (AP Photo/Brennan Linsley)

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In this May 20, 2014 photo, Colorado Department of Transportation engineer Abra Geissler watches as a dozer moves dirt and traffic is escorted along what will eventually be an improved mountain highway, during a road-building operation on Highway 36 between Lyons at Estes Park, Colorado. The goal of the project is to move the road further from the adjacent river, which undermined the road for miles during floods the previous fall, in hopes of preventing such destructive flooding in the future. (AP Photo/Brennan Linsley)

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In this May 20, 2014 photo, Colorado Department of Transportation engineer Abra Geissler watches as a dozer moves dirt along what will eventually be an improved mountain highway, during a road-building operation on Highway 36 between Lyons at Estes Park, Colorado. The goal of the project is to move the road further from the adjacent river, which undermined the road for miles during floods the previous fall, in hopes of preventing such destructive flooding in the future. (AP Photo/Brennan Linsley)