On 22/06/2010 7:10 AM, Mark Thorson wrote:
> Krypsis wrote:
>>
>> Recycling steel is a wonderful concept. The problems arise because of
>> the vast range of impurities in the recycled material. Even running the
>> recycled steel through the smelting process doesn't guarantee that the
>> iron or steel output has the correct alloying makeup. Probably this
>> arises because of the exotic contaminants that are in the recycled steel
>> as opposed to raw iron ore dug up from the ground.
>
> Like this one:
>
> http://www.orau.org/ptp/collection/accidents/juarez.htm

An extreme case of a recycling problem! ;-)

Krypsis