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P is for pit

January 1, 2011

A gravel pit that was a source of happy childhood memories showcases the evolution of mining technology.

Publication Year 2011
Title P is for pit
Authors W. H. Langer
Publication Type Article
Publication Subtype Journal Article
Series Title Aggregates Manager
Index ID 70005025
Record Source USGS Publications Warehouse
USGS Organization Central Mineral and Environmental Resources Science Center