The steel industry has changed radically over the last two decades, as large, integrated companies such as Bethlehem Steel once conducted operations from mining at one end of the process to shipping at the other have greatly downsized, or in some cases shut down altogether.
The steel industry has changed radically over the last two decades, as large, integrated companies such as Bethlehem Steel once conducted operations from mining at one end of the process to shipping at the other have greatly downsized, or in some cases shut down altogether.
as large, integrated companies such as Bethlehem Steel
as large, integrated companies, such as Bethlehem Steel, that
with large, integrated companies, such as Bethlehem Steel, that
while large, integrated companies, such as Bethlehem Steel, that
and large, integrated companies such as Bethlehem Steel
I think that here is used in place of which. A is a run-on sentence. The industry has changed, as comppanies such as B did something have downsized, or shut down.