[Tagging] quarries in engineering

Richard Welty rwelty at averillpark.net
Fri Nov 5 16:16:54 GMT 2010

On 11/5/10 11:05 AM, Richard Mann wrote:
> Gravel/sand/clay come from river beds, generally. Quarries are when
> you blast half a hill away.
> But I'm not an engineer...
gravel around here comes from excavating in the sides of hills
that are actually piles of debris left by glaciers in a previous ice

in the southeast US, clay comes from pretty much anywhere you
use a shovel.


More information about the Tagging mailing list