There have been numerous occassions when there hasDecember 5 2011 at 4:44 AM
|fatboyharris (Login fatboyharris)|
from IP address 220.127.116.11
Response to Anyone care to give an opinion on this colour of gold? >>
been a worldwide copper shortage leading to changes in application and changes in mixes.
At one point copper was in such short suppy in the 70's that eg water/central heating traditionally done in copper piping had to resort to the use of steel pipes with resultant problems of corrosion later on.
I know from experience as I had to completely replumb a cottage pulling out steel piping put in during the copper shortage and putting back copper.
It may explain some of the difference from time to time, beside changes in mix, purity and copper sources.
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