Replying to [Harjeet]:Hi Harjett!
From my understanding:
Scrap come from one of two sources --
NHI dealers
or
Non-NHI dealers
NHI by far has the market share of the scrap market, in addition to it's own shipping line, gold mines etc. They are a huge privately owned company. It seems the prices from a non-nhi dealer is a bit higher, however nhi also has some stringent requirements before you can close a deal with them.
I found an article written about NHI which has their requirements. Here's the link: http://forum.vorras.net/construction/?read=7149
As for inspection services, google it. You'll find quite a few companies that inspect scrap and such before loading.
Hope this helps
Robby