Langer, William H. and V. M. Glanzman

Natural Aggregate: Building America's Future; U.S. Geological Survey Circular 1110

Washington: United States Government Printing Office, 1993. softcover, 11" x 8.5", 39 pages, illustrated. near fine. Item #5568051

from the foreword, "The United States produces nearly 2 billion tons of aggregate per year, which represents approximately one half of the non-energy mining volume in the country. Yet natural aggregate is one of the Nation's poorly understood resources. In this book, the authors discuss issues related to the geologic distribution and characteristics of aggregate and some implications of those factors for our Nation's economy." DB7.

Price: $20.00