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Once the foundation was laid and the vinyl "tent" was in place, it took only 40 minutes for workers from J.S. Alberici Construction Co. to inflate the Exploradome at the St. Louis Science Center.
The 41,000-square-foot structure, which opened Feb. 10, is the Science Center's new temporary exhibition hall and took about four months to build, compared with 10 months for a permanent building of similar size. Science Center officials hope to use the building, which cost less than $2 million to build, for the next five to 10 years until a permanent exhibition hall can be built.
"It should easily exceed that planned life," said Pete Gass, Alberici's senior vice …