On Sun, 16 Mar 2014 21:54:01 -0700, Oren wrote:

I never knew asbestos grows in the wild.

Sure. It's a mineral. That's where people got it. The fibers were
never made, but fire-proof stuff etc. was made from them. .

Talc is chemically the same, Mg3Si2O5(OH)4, but physically different,
and doesn't cause asbestosis. And there's a 3rd mineral that's also
like this, but I forget what.

"CARSON CITY — The discovery of naturally occurring asbestos in and
around Boulder City is delaying work on a $600 million highway bypass
around the community while the state Transportation Department tries
to figure out how to deal with the issue.

They should either cover it with shrinkwrap, or pave it with blacktop.
Then they can dig it up.

“Is this a showstopper?” asked Gov. Brian Sandoval during a Monday
meeting of the state Transportation Board. “This was a bomb that was
dropped.”

Pics:

http://www.reviewjournal.com/news/asbestos-delays-work-boulder-city-bypass

Home owner's need to disclose this in future sales?

Boulder City is near the Hoover Dam.