USGS
USGS says dredge mining a cause for California beach erosion
The San Francisco Chronicle reports that dredge mining of shoals near Angel and Alcatraz islands and throughout Suisun Bay is robbing the bay of sand that keeps San Francisco's Ocean Beach from eroding, according to new research by the U.S.… Keep Reading
USGS says aggregates production increases in third quarter
The U.S. Geological Survey (USGS) has released figures showing that an estimated 583 million metric tons (mmt) of total aggregates were produced in the U.S. in the third quarter this year. The figure represents an increase of 6.8 percent compared… Keep Reading
USGS reports second quarter increases in crushed stone production
An estimated 316 million metric tons of crushed stone were produced and shipped for consumption in the United States in the second quarter of 2012, according to the U.S. Geological Survey (USGS). The 316 million is a slight increase compared… Keep Reading
Second quarter aggregate production up considerably
Preliminary numbers from the U.S. Geological Survey (USGS) suggest aggregate production rose sharply in the second quarter. Increases in domestic production for crushed stone, sand and gravel were substantial compared to production in the first quarter of 2012, primarily owing… Keep Reading
Aggregate production down slightly in 2011
The U.S. Geological Survey (USGS) has released its full 2011 U.S. aggregate production numbers. An estimated 281 million metric tons (Mt) of crushed stone was produced and shipped for consumption in the United States in the fourth quarter of 2011,… Keep Reading
