The New “Black Gold”: Biofuel from Sewage » sewer-grate

sewer-grate
sewer-grate.jpg

sewage grease is visible through grate in sewer

This entry was posted on Saturday, February 14th, 2009 at 12:20 am and is filed under . You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

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