Engineers are now pumping cement into the ruptured BP oil well....
Gulf Coast -- Crews have begun the final step to permanently sealing the leaking well in the gulf.
Engineers began pumping mud through a containment cap on top of the fractured riser on Thursday.
Everyone agrees this is a huge move in the right direction, but there is still some concern about what comes next and where all of the oil that spilled into the gulf may be hiding.
For many the problems and frustrations caused by three months of crude pouring into the gulf are still very much alive.
There continue to be lingering questions about exactly how much oil is still in the water.
Government scientists say 75-percent of the 207-million gallons from the spill is gone, but those who work and live on the water aren't so sure.
They worry there is still crude, weighed down by chemical dispersants, well below the surface.
Crews should resume drilling on the primary relief well in the next day or two.
It could intersect with the fractured rig by the end of next week.