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

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