"EXT" etonks@sunstormADD-DOT-COM wrote in message
anews.com...
I remember when only black iron was allowed. The switch to copper came in
our area when the utility (which I worked for) decided to use copper lines
from the underground to the meter because there was less damage to the
service from frost heaving. The copper would just bend a bit where the
black
iron elbows and couplings on the meter could crack or pull loose with
solid
iron pipe.


Your forgot to mention something the original poster is unaware of. They
tested the pipes BEFORE they buried them.

Bill