American Association of State Highway and Transportation Officials http://www.transportation.org/

Asphalt Institute
http://www.asphaltinstitute.org/

International Slurry Surfacing Association
http://www.slurry.org/

National Center for Asphalt Technology http://www.eng.auburn.edu/center/ncat/

National Asphalt Pavement Association
http://www.hotmix.org/

Wisconsin Motor Carriers Association
http://www.witruck.org/

Illinois Asphalt Pavement Association
http://www.il-asphalt.org/

Minnesota Asphalt Pavement Association
http://www.asphaltisbest.com/

Asphalt Paving Association of Iowa
http://www.apai.net/

Asphalt Pavement Association of Indiana
http://www.ind-asphalt.com/

Asphalt Pavement Association of Michigan
http://apa-mi.org/

Illinois Department of Transportation
http://www.dot.state.il.us/

Iowa Department of Transportation
http://www.dot.state.ia.us/

Indiana Department of Transportation
http://www.in.gov/indot/

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US Department of Transportation
http://www.dot.gov/

Transportation Research Board
http://trb.org/

Federal Highway Administration
http://www.fhwa.dot.gov/

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Aggregates Manager Magazine
http://www.aggman.com/

Asphalt Contractor Magazine
http://www.forconstructionpros.com/cover/Asphalt-Contractor/2FCP

Better Roads
http://www.betterroads.com/content/index.php

North American Quarry News
http://www.quarrynews.com

Pit and Quarry Magazine
http://www.pitandquarry.com/

Public Works Magazine
http://www.pwmag.com/

Roads & Bridges Magazine
http://www.roadsbridges.com/

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