On top of what Rick said, when the 200 dma crosses the 50 dma, this is called a "Golden Cross". It is a VERY bullish signal that will send day traders flooding into KATX for a time. The bullish sentiment generally continues until the 2 DMA lines approach one another on the other side and return to a "normal" trading pattern.
"As we have better investment options in other areas, Vale has chosen to cancel the lease contract it had signed in 2006," he added.