WUSA CBS Morning News October 11, 2010
the surface by wednesday. this morning crews expect to reinforce the shaft with metal tubes. it could take up to two days to hoistall miners to the surface and chilean officials said all the miners are volunteering to be the last man out. seth doane in chile with the latest. >> reporter: the giant pieces of steel casing were hoisted into position. they're being welded together and lowered into the rescue shaft to reinforce the walls. the process should take about a day and a half. >> you can see some small fractures. and in order to prevent any contingency due to that, we are doing i...