"Roger" wrote in message
...
On Fri, 21 Apr 2006 14:59:44 GMT, ktbr wrote:

IS User wrote:
That's _make_, not pump and refine.

Eventually you will see more of this type of processing waste
into energy. But you must realize that it would take a massive

But this is a very limited resource.

contruction effort to build enough of these plants to make even
a small dent in the total oil needs of the United States.

By the time you have enough to make a small dent the raw materials
will become scarce and expensive.

Which raw materials are you referring to?