Does this mean Vegans will not be able to bring themselves to drive
on these roads? Will they have to carry warning labels so that Vegans
won't be misled into using them? Will they have to carry Origin statements?
Good article about this lady in Wired Magazine this month.

http://www.betterroads.com/pig-manur...sphalt-binder/

American drivers might have an unlikely source to thank for their smooth
roads - pig poop.

PIGrid (pronounced like ˜hybrid) is a green initiative to convert hog
manure into a binding material for asphalt. Not only does PIGrid
aim for more sustainable practices of hog waste disposal, but the
economic costs are significantly less expensive. Compared to
petroleum-based binders that cost about $2 per gallon, hog waste
can be converted into a longer lasting binder at only 50-cents per gallon.

Elham Fini, an assistant professor of civil engineering from NC A&T
State University, created PIGrid after receiving about $1.2 million in
research funding in 2008 from the National Science Foundation.

Fini says swine waste can be converted to yield a binding, or adhesive,
material that can replace a petroleum derivative that now makes up
about 7 percent of asphalt and that has driven up asphalt's cost, according
to a North Caroliona report.

Fini says pig waste binder costs about 54 cents per gallon compared
to $2 per gallon for the petroleum binder.

She said the construction industry may find it favorable because it is
less expensive, eco-friendly and is more durable in cold weather,
according to the report

In addition to the financial benefits for the construction industry,
the findings of Fini's research also solve the growing waste disposal
problem for farmers in North Carolina. Currently, more than 9 million hogs
are being raised throughout North Carolina and safely disposing of
their manure has been a concern.

Fini is working directly with hog farmers and the construction industry
to finalize details for the launch PIGrid within the next 12 to 18 months.