CLICK PHOTOS FOR AN ENLARGED VERSION
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![pipeline rupture](/peth04/20041017181812im_/http://toxics.usgs.gov/photo_gallery/photos/bimidji/bimidji_sm.jpg)
Area of crude oil pipeline rupture, Bemidji,
MN
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![pipeline rupture](/peth04/20041017181812im_/http://toxics.usgs.gov/photo_gallery/photos/bimidji/bimidji3_sm.jpg)
Crude oil pipeline rupture, Bemidji, MN
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![crude oil spray area](/peth04/20041017181812im_/http://toxics.usgs.gov/photo_gallery/photos/bimidji/bimidji2_sm.jpg)
Crude oil spray area at pipeline rupture, Bemidji,
MN
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![conceptual model](/peth04/20041017181812im_/http://toxics.usgs.gov/photo_gallery/photos/bimidji/bimidji4_sm.jpg)
Conceptual model of microbial geochemistry
at Bemidji Site
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![sample collecting](/peth04/20041017181812im_/http://toxics.usgs.gov/photo_gallery/photos/bimidji/bimidji10_sm.jpg)
Collecting Unsaturated Zone vapor sample
at Bemidji site.
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![core cutting](/peth04/20041017181812im_/http://toxics.usgs.gov/photo_gallery/photos/bimidji/bimidji5_sm.jpg)
Cutting a frozen core, Bemidji site.
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![Gas Comatograph](/peth04/20041017181812im_/http://toxics.usgs.gov/photo_gallery/photos/bimidji/bimidji6_sm.jpg)
Dr. Phil Bennett UT Austin, with Gas Comatograph
equipment
in field lab, Bemidji site.
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![installing a tensiometer](/peth04/20041017181812im_/http://toxics.usgs.gov/photo_gallery/photos/bimidji/bimidji7_sm.jpg)
Installing a tensiometer, Bemidji site.
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![measuring hydrogen gas](/peth04/20041017181812im_/http://toxics.usgs.gov/photo_gallery/photos/bimidji/bimidji8_sm.jpg)
Making hydrogen gas measurements in
field lab, Bemidji site.
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![bemidji tracer tests](/peth04/20041017181812im_/http://toxics.usgs.gov/photo_gallery/photos/bimidji/bimidji9_sm.jpg)
Tracer test being conducted at Bemidji site.
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