And contrary to reports you may be hearing elsewhere those will continue to be the packaging materials of choice well into the next century. But share of market enjoyed by each of the four material categories will change. In fact driven by economics environmental issues changing demographic patterns and advancing technologies the shares have been shifting for some time: away from heavy rigid container forms and toward lighter more flexible types of packaging. For many glass container makers the prevailing market direction has been toward extinction. In 1980 there were more than 100 glass container plants in the U.S. Today there are only about 67 plants and a number of venerable glass container names are now nothing more than footnotes in a few corporate histories. If recent events are any guide seven to 10 more U.S. glass container facilities could be shut down in the next 18 months.