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Coastal Processes

Duluth-Superior Harbor Corrosion

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Duluth-Superior Harbor Corrosion

		2007 Field Investigations - Coupon Sample Retrieval

	AMI Dive Boat Underwater Picture of Coupon Tray

	AMI Diver Removing Coupon From Tray

	AMI Diver With Removed Coupon

	Close-up Of Removed Coupon

	Coupon Sample Collected For Lab Analysis

	Coupons Being Prepared For Transport To Lab

	Coupons Ready For Lab Work

		2007 Field Investigations - Duluth-Superior Harbor Corrosion Pictures

	Close-up Of CN Dock Corrosion

	Close-up Of Range Cell Corrosion

	Corrosion Observed at Bong Bridge Range Cell

	Corrosion Observed at CN Ore Docks

	Corrosion Observed at Erie Pier CDF

	Corrosion Observed at Murphy Oil Dock

	Range Cell Steel Corrosion

		2007 Field Investigations - Examples Of Corrosion In Other Great lakes Harbors & Marinas

	Apostle Islands Marina Bayfield, WI

	Bayfield Harbor, WI

	Big Bay Harbor, MI

	Houghton Marina, MI

	Lac La Belle State Dock, MI

	Madeline Island Marina, WI

	Ontonagon Marina, MI

	Presque Isle Dock Marquette, MI

	Presque Isle Marina Marquette, MI

		2006 Field Investigations

	AMI Divers Inspect Duluth Entry

	AMI Divers Inspect US Army Corps of Engineers Slip

	AMI Divers Inspect Minnesota Slip

	Diver Support Monitoring and Data Recording

	AMI Divers Perform Visual Inspections

	Corrosion Product Visual Inspection Screen Capture

	Marine Growth Samples (Freshwater Sponges)

	Pit Depth Measurement Gage

	Pit Depth Measurement Screen Capture

	Insitu Thickness Meter

	Insitu Thickness Measurement Screen Capture

	Water Quality Measurement Probe and Meter

	Corrosion Tubercle Screen Capture

	Corrosion Tubercle Collected For Lab Analysis

	MIC Samples Collected For Lab Analysis

	Chad Scott Inspects Coating Test Samples

	5 Year Coating Test Samples After Removal

		Miscellaneous

	Harbor Channel Marker Buoy and Chain

	H-Pile Corrosion Example

	Bong Bridge Cell

	Sheetpile Corrosion Example

	H-Pile Jacketing Repair

	H-Pile Jacketing Repair

	Corrosion Workshop Field Trip

	Superior Entry Corrosion

	Superior Entry Corrosion

	Superior Entry Corrosion

	Corrosion Workshop Site Investigation

	Harbor Channel Marker Buoy and Chains

Duluth-Superior Harbor Corrosion Home Page

Contacts

Gene Clark
Coastal Engineering Specialist
Wisconsin Sea Grant
(715) 394-8472

Dave Bowman
Project Manager
U.S. Army Corps of Engineers
Detroit
(313) 226-2223

Jeff Gunderson
Acting Director
Minnesota Sea Grant
(218) 726-8715

James Sharrow
Facilities Manager
Duluth Seaway Port Authority
(218) 727-8525

All photos used with permission.

University of Wisconsin Sea Grant Institute, 1975 Willow Drive FL 2, Madison, WI 53706-1177 ph 608-262-0905
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