US California: Slumburbia. February 10, 2010 New York Times* By TIMOTHY EGAN. In Lathrop, Manteca and Tracy, California, among some of the world's most productive farmland, you can find streets of foreclosed home, looking like a 21st century ghost town, with rock-bottom discounts on empty starter mansions.
Sand is a loose, fragmented, naturally-occurring material consisting of very small particles of decomposed rocks, corals, or shells. Sand is used to provide bulk, strength, and other properties to construction materials like asphalt and concrete.
This bulletin provides a critical review of products typically used for the display, storage and transportation of objects. It explains how certain products can affect objects and their preservation, and to propose guidelines for minimizing damaging effects.