The stone industry in the US (Shelby Township, MI)

Domestic production and use
According to the US Geological Service approximately 1.5 million tons of dimension stone, valued at $275 million, was sold or used in 2006 from $269 million in 2005. Dimension stone was produced by 100 companies, operating 136 quarries, in 35 States. Leading producer States, in descending order by tonnage, were Wisconsin, Georgia, Indiana, Vermont, and Massachusetts. These five States accounted for about 62% of the production.
Approximately 38%, by tonnage, of dimension stone sold or used was limestone, followed by granite (27%), marble (14%), sandstone (13%), miscellaneous stone (7%), and slate (1%). Rough block represented 64% of the tonnage and 54% of the value of all the dimension stone sold or used by domestic producers, including exports. The leading uses and distribution of rough block, by tonnage, were in flagging, exports, and unlisted and unspecified applications (36%) and construction (34%). Dressed stone mainly was sold for flagging (27%), curbing (24%), and ashlars and partially squared pieces (17%), by tonnage.
Events, trends, and issues
Imports increased by 15% in value to about $2.5 billion. Dimension stone exports increased to about $68 million. Apparent consumption, by value, was $2.7 billion in 2006??a $328 million increase from that of 2005.
Dimension stone for new construction and refurbishment is being used more commonly in both commercial and residential markets. Increased domestic production and imports, along with improved quarrying, finishing, handling technology, greater varieties of stone, and the rising costs of alternative construction. According to thestone.info