Democrat Barack Obama says he is not shifting his policy on troop withdrawals from Iraq, just hours after he said he was open to "refining" his policy.

NPR: Obama Says His Position On Iraq Is Unchanged

"This crash began back when refining problems around the country were being fixed, one after the other, at the same time that our seasonal gasoline demand was shrinking, " she said.

CNN: U.S. gas prices 'crash'

To overcome the seasonality of the sugar business--mills tend to remain idle for six months after the crushing season--the Murkumbis modified the Munoli factory to start refining raw sugar once imports of the commodity were allowed in 2004.

FORBES: Magazine Article

These are after all mines, often big mines, and the minerals extracted require complex and challenging refining to separate the chemically similar constellations of rare earth elements that are always collocated in various mineral concentrations and combinations.

FORBES: Tech's Mineral Infrastructure - Time to Emulate China's Rare Earth Policies