The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.

Report on and comparison of the iron ore industry in the USA and throughout the world - includes information on natural resources, technology, production, consumption, industrial structure, employment and productivity, research and development, etc., and comments on national legislation and government policies. Bibliography and statistical tables.