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太阳带(Soun Belt)的发展速度是美国其他地区前所未有的,对建筑制品的需求也在不断增长。美国南部的三家采石场已在增加产量来满足这种需求,结果使这三家采石场进入美国十大采石场之列。
The Soun Belt is growing faster than anywhere else in the United States, and the demand for building products is also on the rise. Three quarries in the southern United States have been increasing production to meet this demand, resulting in the three quarries into the top ten quarries in the United States.