He added that the project would be viable even if oil fell to $40 a barrel.
In real prices, oil briefly fell back to pre-1973 levels.
Just a few weeks ago, many traders were predicting that oil would fall below $50 a barrel.
In electronic trading after the exchange closed, oil fell another 2.5 percent, to $34.05.
Many investors think oil will soon fall back to under $20 a barrel.
Some traders said oil would fall back into the $20's later this week.
On other markets, crude oil fell while lumber prices rose.
On other markets, copper prices rose and crude oil fell.
He noted that America and oil were falling together.
Maybe we'll get through this bad patch, and oil will fall back toward $30 a barrel.