Factors such as availability and transportation costs, as well as physical properties, that can affect stability and finishability, influence whether crushed cement concrete or construction aggregates should be used or predominate for a particular end use. The software must be installed onto an IBM-compatible hard disk before the data can be used. All can be displayed, and most can be searched. Not all fields, however, contain data. The CD-ROM is accompanied by a users manual entitled the GNIS Digital Gazetteer.
Prepayment is required.
Visa and Mastercard are accepted. Prices are subject to change.